by Jen-Ken

Jen-Ken Oval 18 Glass/Casting Kiln

SKU JENKEN-OVAL-18-GC

Save $1,132.00 Free gift · $33.90 value

$5,660.00

$4,528.00

FREE with this kiln: Studio Starter Pack ($33.90 value) Ships with your kiln. Added to your cart automatically.

12 Jen-Ken 1.5 x 1.5 in. kiln posts: 3 each of 1/2, 1, 2 and 4 in. tall

Offer ends Nov 30 One free pack per qualifying kiln.

Talk to an Expert Secure Checkout 30-Day Returns No Sales Tax Outside GA

Better price? Request a wire discount Schools, studios & bulk orders: get a quote Military & veteran discounts available

Quantity

Not sure this is the right fit? Power, size, firing needs: talk it through with a real person before you order. Call or text (470) 264-3563

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Flat-Rate Freight Delivery

✓ No sales tax outside GA ✓ Quoted at checkout ✓ Authorized Jen-Ken dealer

🔨

Made to order: Jen-Ken builds each kiln in Lakeland, Florida after you order, and says shipping can take several weeks to several months. Call or text us for the current lead time before you buy.

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2-year limited warranty on brick kilns, 1-year on fiber kilns — direct from Jen-Ken.

Questions? Call or text us at (470) 264-3563

Jen-Ken · Glass Kiln · Oval Glass/Casting Jen-Ken Oval 18 Glass/Casting Kiln Model Oval 18 Glass/Casting · 240V · 39" x 24" x 18" chamber · 1,700°F glass / 2,150°F casting The Oval 18 is the biggest Glass/Casting kiln Jen-Ken builds in brick: a 39-inch by 24-inch oval chamber with eighteen inches of height, coils in both the top and the sides, and a 2,150°F casting ceiling. The oval shape is not decoration — it is what lets a 39-inch panel or a long platter sit on one shelf without a kiln the size of a car. Eighteen inches of height is enough for substantial casting moulds standing up. It draws 45 amps at 240V and weighs 350 lbs, so this is a sited installation with a freight delivery, not something you shuffle about.

FiresGlass, casting, low-fire clay

Max Temp1,700°F / 2,150°F

Chamber39" x 24" x 18"

Power240V · 45A

Key features

39" x 24" oval chamberLong enough for panels and platters that will not sit on a square shelf, without the floor space a square kiln of the same length would need.

Top and side coilsCoils in both planes, which is what gives an oval this size an even fuse rather than hot ends.

Orton AutoFire 12-button controllerJen-Ken fits the 12-button AutoFire as standard on this model — 23 preset programs plus 10 of your own.

18 inches of heightRoom for a substantial casting mould standing up, not just flat work.

2-year limited warrantyJen-Ken's brick-kiln warranty, direct from the factory to the original purchaser.

Crate contents — ask usJen-Ken does not publish a crate list for this model. We will confirm exactly what ships with it, including whether a shelf and stand are in the crate, before you order.

Optional accessories

Kiln shelves, posts and a furniture kitGlass wants a flat, primed shelf and fibre paper; casting wants posts and headroom. Jen-Ken's own shelves and posts are sized to this chamber and we stock them alongside the kiln. Tell us your shelf size and we will match it.

Kiln wash and shelf primerGlass will weld itself to an unprimed shelf. Most glass workers go through primer steadily, so it is worth adding to a first order.

Slumping moulds and fibre paperMoulds and fibre paper are the other half of a warm-glass setup. Tell us the shelf size you are working to and we will point you at what fits.

Controller upgradeJen-Ken fits the Orton AutoFire 12-button as standard and offers the AutoFire Slide touchscreen and the SDS TAP II in its place. It is a factory option rather than a checkout add-on — call us and we will quote it.

Common questions

What does "Glass/Casting" actually mean?Two firing modes in one kiln. For fusing and slumping the elements fire from the top and the sides together, which washes a wide shelf in even heat — that is what flat glass wants, and the ceiling there is 1,700°F. For casting, the side elements do the work on their own and the kiln will go to 2,150°F, which is the range a casting mould and a long ramp need. You select the mode; it is one kiln with two ways of heating, not a compromise between them.

Why is there no breaker size in the spec table?Because Jen-Ken's two sources disagree and one of the figures cannot be built. Their product page lists a 60-amp breaker behind a NEMA 6-50R receptacle — a 6-50R is a 50-amp device and must not sit on a 60-amp circuit. The wiring table in Jen-Ken's own owner's manual lists the Oval 18 at 240V, 45 amps, #6 wire, a 50-amp fuse and a 6-50R, which is coherent but contradicts the page. The breaker size is one of the two figures you hand your electrician, so we will not print one we cannot stand behind. Call or email us before anything is wired and we will get the nameplate figure from the factory. Everything else — 240V, 45 amps, 10,800 watts, the 6-50R and #6 copper — appears in both sources and is published above.

What cone will it reach?Jen-Ken publishes no cone rating for any kiln in their glass line, this one included, and we have not worked one out from the temperature. What is published is the two ceilings — 1,700°F in glass mode and 2,150°F in casting mode — and those are in the table above. Treat 2,150°F as low-fire clay and glaze territory.

Will it fire clay?Low-fire clay and glaze, yes — Jen-Ken lists low-fire ceramics among this kiln's functions and 2,150°F is in that range. What it will not do is mid-fire or high-fire stoneware: cone 6 is out of reach, let alone cone 10. If pottery is the main event, buy a ceramic kiln and keep this one for glass. If you fire glass most of the time and want the option of a low-fire load, this is exactly the kiln for it.

Why do you list 9.33 cubic feet when Jen-Ken says 14?Because 14 is the Oval 27's figure and it has been copied onto this page by mistake. A 39" x 24" x 18" box is 9.75 cubic feet before you take anything off for the oval shape, so 14 is not merely generous — it is larger than the chamber could be if it were square. Jen-Ken's own Ceram-a-Glass Oval, which has exactly the same 39" x 24" x 18" chamber and the same 450 lb shipping weight, is published at 9.33 cubic feet, and their Oval 13 and Oval 27 figures form a consistent series with it: 7.2, 9.33, 14. We have published 9.33 because it is Jen-Ken's own number for this chamber. The 14 would have you over-buy shelves and mis-plan your floor by half. We have raised it with the factory.

How much floor does it need?It crates at 450 lbs and arrives by motor freight with a lift gate, and the chamber alone is over three feet long. Talk to us about access, doorways and where it lands before you order — on a kiln this size, getting it into the room is usually the harder half of the job.

What actually comes in the crate?Jen-Ken does not publish a crate contents list for every model, so we do not want to guess. Call or email us and we will confirm exactly what ships with this kiln — stand, furniture, shelf — before you order.

How long until it ships?Jen-Ken builds to order in Lakeland, Florida. Their own guidance is that kilns can take several weeks to months depending on the production queue. Call us and we will get you the current estimate before you commit.

Does buying from Peach State Pottery affect my warranty?No. We are an authorized Jen-Ken dealer, so the factory warranty applies exactly as it would buying direct. Jen-Ken gives brick kilns two years. Keep your proof of purchase.

Talk to us before you book the electrician. We are authorized Jen-Ken dealers based in Georgia. Jen-Ken's page and Jen-Ken's own manual disagree on this kiln's breaker, and their published cubic-feet figure belongs to a different model. Call us and we will get the real numbers from the factory before anything is installed.

Talk to an expert →

Why Buy from Peach State Pottery?

Choosing the right kiln is a significant investment, and we're committed to making the process as straightforward and stress-free as possible. From your first question to long after delivery, we're here to help you fire with confidence.

Expert Guidance

Buying a kiln isn't a one-size-fits-all decision. Whether you're purchasing your first kiln or upgrading your studio, we'll help you choose the right model based on your firing needs, available power, studio space, and budget.

Our goal isn't simply to make a sale—it's to make sure you purchase the right equipment the first time.

Competitive Pricing with Discounted Freight

We believe in honest pricing.

Instead of inflating product prices to advertise "free shipping," we offer competitive kiln pricing paired with discounted flat-rate freight shipping. Thanks to our freight partnerships, our customers receive shipping rates that are often significantly lower than standard commercial freight costs.

You'll always see your shipping cost before completing your purchase—no hidden fees or surprise freight charges after you order.

Flexible Return & Cancellation Policies

We understand that purchasing a kiln is a major decision.

That's why we offer straightforward cancellation and return policies designed to give you confidence when ordering.

Unlike many retailers, we also allow the manufacturer's recommended initial test firing without automatically voiding your return eligibility, provided the kiln is returned in like-new condition with all original packaging and accessories.

Outstanding Customer Support

When you contact Peach State Pottery, you'll speak with real people who understand ceramic equipment.

We're here to help with:

Product recommendations
Lead time updates
Freight delivery coordination
Electrical and voltage questions
Warranty assistance
Manufacturer support
Post-purchase guidance

Whether your question comes before or after your purchase, we're only a phone call or email away.

Built for the Long Term

We carefully select manufacturers known for producing reliable, high-quality equipment that artists can depend on for years.

Our mission isn't simply to sell kilns—it's to help support your creative journey for years to come.

Supporting a Small Business That Cares

As a family-owned business, every order matters.

When you shop with Peach State Pottery, you're supporting a company that genuinely cares about the pottery community. We believe expert advice, honest pricing, and exceptional service should come standard with every purchase.

Thank you for trusting us to be part of your creative journey.

Warranty & Product Support

We proudly stand behind every kiln and piece of equipment we sell.

Most products include the manufacturer's warranty covering defects in materials and workmanship. Warranty terms vary by manufacturer and are listed on each product page.

If you ever experience a problem with your equipment, simply contact us. We'll work directly with both you and the manufacturer to resolve the issue as quickly as possible.

Damaged or Incorrect Shipments

Please inspect all freight shipments before signing the delivery receipt.

If your order arrives damaged or incorrect:

Note the damage on the carrier's delivery receipt.
Take clear photos of the shipment and packaging.
Contact us as soon as possible with your photos.

If your claim is approved, we'll coordinate the replacement or repair process at no additional cost to you.

Please retain all original packaging until your claim has been resolved.

Damage resulting from normal wear, misuse, improper installation, or improper operation is not covered under this policy but may be addressed under the manufacturer's warranty when applicable.

Manufacturer's Recommended First Test Firing

We understand that manufacturers recommend performing an initial test firing before regular kiln use.

Completing the manufacturer's recommended first firing will not automatically affect your return eligibility, provided:

The kiln remains in like-new condition.
All original packaging, manuals, and accessories are retained.
The return otherwise complies with our Return Policy.

This allows you to verify your kiln is functioning properly while still providing peace of mind with your purchase.

Shipping Policy

Transparent, Discounted Freight Shipping

At Peach State Pottery, we believe you should know exactly what you’re paying for.

We do not advertise “free shipping” on kilns and quietly build freight costs into the product price. Instead, we price each kiln competitively and charge a discounted flat-rate freight fee based on the size of the kiln and where it is being delivered.

This allows us to keep our kiln prices fair while passing along discounted freight rates to our customers.

Your shipping rate is shown at checkout before you place your order, so you can see the true cost of your purchase upfront.

No inflated product pricing. No hidden freight markup. No surprise shipping bill after checkout.

How Kiln Shipping Works

Kilns and other large equipment typically ship by LTL freight carrier.

Your flat-rate freight charge is determined primarily by:

The size and weight of the kiln
Your delivery location
The type of delivery required
Freight accessibility at the destination

For most standard kiln deliveries within the contiguous United States, the shipping rate shown at checkout is the amount you pay.

Standard Kiln Freight Typically Includes

✓ Curbside freight delivery

✓ Residential delivery when required

✓ Liftgate service when required

✓ Delivery appointment scheduling

✓ Shipment tracking

Because we subsidize a portion of the freight expense and use discounted carrier rates, our shipping charge may be considerably lower than standard retail freight pricing.

Why We Don’t Offer “Free Shipping”

Freight shipping a kiln is never truly free.

A large kiln can cost hundreds of dollars to ship depending on its size and destination. When a retailer advertises free freight, that shipping expense generally has to be recovered somewhere else, often through a higher product price.

We prefer a more transparent approach.

At Peach State Pottery:

The kiln is priced based on the kiln itself.
Shipping is priced based on the actual type of shipment required.
Customers closer to the shipping origin are not forced to subsidize customers thousands of miles away.
You can see your freight charge before completing your purchase.

Our goal is to give you a fair total delivered price, not simply advertise the word “free.”

Flat-Rate Freight Pricing

We use discounted flat-rate freight tiers based on kiln size and delivery region.

Because shipping a small tabletop kiln a few hundred miles is very different from shipping a large production kiln across the country, freight pricing can vary from product to product and destination to destination.

The applicable freight rate is calculated during checkout.

If you’re comparing prices between retailers, we recommend comparing the total delivered price rather than product price alone.

When a Custom Freight Quote May Be Required

Our standard flat-rate freight program covers the majority of kiln deliveries within the contiguous United States.

Some orders may require additional review, including:

Oversized or exceptionally heavy kilns
Large-capacity production equipment
Custom-built equipment
Alaska and Hawaii
U.S. territories
Canada and international destinations
Islands or ferry-access locations
Extremely remote locations
Limited-access properties
Locations with restricted truck access
Inside delivery
White-glove delivery
Installation or uncrating services

If your order requires a custom freight quote or additional shipping arrangements, we will contact you before the order is processed.

We will never intentionally add an unexpected freight charge without discussing it with you first.

Freight Delivery

Most kilns and large equipment are delivered by an LTL freight carrier rather than UPS or FedEx.

Once your kiln reaches the destination terminal, the carrier will typically contact you to schedule a delivery appointment.

What to Expect

Someone should be available to receive and inspect the shipment.
Standard freight delivery is curbside.
Liftgate service is included when required on eligible kiln shipments.
The driver is not responsible for moving the kiln into your home, garage, studio, or business.
The driver is not responsible for installation, assembly, or uncrating unless those services were specifically arranged.

Please make sure the phone number provided with your order is accurate so the freight carrier can reach you.

Delivery Access

Freight trucks are significantly larger than standard delivery vehicles.

Before ordering, please consider whether a large truck can safely access your delivery location.

Additional carrier charges may apply for situations such as:

Extremely remote locations
Narrow or restricted roads
Steep or inaccessible driveways
Limited-access properties
Address changes after shipment
Missed delivery appointments
Storage at the freight terminal
Redelivery
Inside delivery
White-glove services

If you’re unsure whether your property is suitable for freight delivery, please contact us before ordering. We’re happy to help.

Inspecting Your Kiln for Freight Damage

Freight damage is uncommon, but it is extremely important to inspect your shipment before signing the delivery receipt.

Before Signing for Delivery

Please:

Inspect the packaging and pallet carefully.
Look for crushed areas, punctures, dents, broken boards, or other visible damage.
Take photos of the shipment before removing packaging.
Note any visible damage on the delivery receipt.

If the shipment has significant visible damage, you may refuse delivery.

Write:

“Refused due to freight damage.”

on the delivery receipt.

Signing for a visibly damaged shipment without documenting the damage may make a freight claim more difficult.

Concealed Damage

Occasionally, damage may not be visible until the kiln is unpacked.

If you discover concealed damage, contact us as soon as possible.

Please keep all packaging materials and provide photos of:

The kiln or equipment
The damaged area
The packaging
The pallet or crate
The delivery receipt

Do not discard the packaging until the issue has been resolved.

Missed Deliveries, Storage & Redelivery

Once a delivery appointment has been scheduled, someone should be available to receive the shipment.

If the carrier is unable to complete delivery because the customer is unavailable or the delivery location is inaccessible, the carrier may assess:

Redelivery fees
Storage fees
Address correction fees
Reconsignment fees

Carrier fees resulting from missed appointments, incorrect addresses, or customer-requested delivery changes are the responsibility of the customer.

Shipping Smaller Items

Accessories, replacement parts, pottery supplies, and smaller equipment may ship through carriers such as:

UPS
FedEx
USPS
Other parcel carriers

Shipping charges for these products are calculated at checkout based on the shipment size and destination.

Some orders containing both kiln equipment and smaller accessories may arrive in separate shipments.

Order Confirmation

After your order is placed, you’ll receive an order confirmation email.

For kiln and large equipment orders, our team may review important order details before processing, including:

Voltage
Phase
Shipping address
Freight accessibility
Product configuration
Selected options
Current lead time

If anything needs clarification, we’ll contact you before the order moves forward.

This additional review helps reduce ordering mistakes on expensive equipment.

Lead Times

Many kilns and specialty equipment products are built to order or ship directly from the manufacturer.

Lead times can vary based on:

Manufacturer
Model
Product configuration
Controller selection
Voltage and phase
Current production schedules
Product availability

Any lead time displayed on our website should be considered an estimate unless specifically stated otherwise.

Manufacturing delays, freight delays, weather, and other circumstances outside our control may affect delivery timing.

If you need equipment by a specific date, please contact us before ordering so we can help verify the latest estimated lead time.

Tracking Your Order

Once your order ships, tracking information will be sent to the email address associated with your order.

Freight tracking may update less frequently than traditional UPS or FedEx tracking.

When the shipment reaches your local freight terminal, the carrier will generally contact you directly to arrange delivery.

Alaska, Hawaii & International Shipping

We can assist with shipping to:

Alaska
Hawaii
U.S. territories
Canada
Many international destinations

Because freight costs vary significantly for these locations, a custom shipping quote is generally required.

Please contact us before placing your order so we can determine shipping availability and pricing.

Address Changes

Please carefully verify your shipping address, phone number, and email address before completing your order.

If you need to change the delivery address before shipment, contact us immediately.

Once an order has shipped, freight carriers may charge additional fees for rerouting or changing the destination. Any carrier fees caused by a customer-requested address change may be the customer’s responsibility.

Planning Around Your Delivery

We recommend waiting until your kiln has been delivered and inspected before scheduling:

Electricians
Contractors
Installers
Classes
Studio openings
Other time-sensitive work

Production schedules and freight transit times can occasionally change.

While we’ll always do our best to provide accurate estimates and assist with freight communication, we cannot guarantee a specific delivery date unless explicitly stated in writing.

Questions About Shipping?

Buying a kiln is a major purchase, and freight shipping can be unfamiliar if you haven’t ordered large equipment before.

If you have questions about:

Shipping cost
Freight delivery
Liftgate service
Delivery access
Lead times
Electrical requirements
Kiln size
Product configuration

please contact us before placing your order.

We’re happy to help make sure you’re ordering the right equipment and understand exactly what to expect.

Our goal is simple: fair kiln pricing, discounted freight rates, and a transparent total delivered cost with no surprises.

Common questions about this kiln

Still stuck? Call or text (470) 264-3563 and talk it through with a real person.

Is freight delivery included in the price?

No. Kiln prices do not include freight, and we do not quietly build it into the product price. Freight is charged at a flat rate based on your delivery address and is shown at checkout. Liftgate service is included when it is needed, and standard delivery is curbside. You can estimate your delivered cost with the ZIP code tool above the Add to Cart button.

Can I return this kiln if it is not right?

Return requests can be submitted within 30 days of delivery. The kiln needs to be in its original packaging, in new and resellable condition, and approved before it is sent back. A restocking fee may apply. Completing the manufacturer's recommended first test firing does not by itself make a kiln non-returnable, so you can confirm it works before you commit. Full terms are on our Returns page.

What electrical supply do I need for this kiln?

The Specifications tab on this page lists this model's voltage, amperage, required breaker size and NEMA plug configuration. Most 240V kilns need their own dedicated circuit fitted by a licensed electrician, while many 120V models run from a standard household outlet. If you are unsure what your space can support, call or text (470) 264-3563 before ordering.

Does this kiln come with a warranty?

Yes. This kiln carries the Jen-Ken manufacturer warranty. Coverage length, what is included and any registration deadline are listed in the Specifications tab on this page. We are an authorized Jen-Ken dealer, which is a condition of warranty coverage on most kiln brands.

What comes with the kiln, and what do I need to buy separately?

The What's Included tab on this page lists exactly what ships with this kiln. Most kilns need shelves, posts and kiln wash before your first firing, and these are not always included. A vent is recommended for indoor installations. Any add-ons available for this model are shown above the Add to Cart button.

About this kiln

Best for: Potters, glass artists and bladesmiths who want an American-built kiln from a small Florida factory that has been building kilns since 1951 and still answers its own phone.

Jen-Ken has been owned and run by the same two brothers in Lakeland, Florida since 1991, and builds more than 60 kiln models for clay, glass and bladesmithing. The people who build the kilns fire them too.

🔨 Lead time

Made to order

Built in Lakeland, Florida after you order. Jen-Ken states that shipping may take several weeks to several months, so call us for today's estimate before you plan around it.

✓ Warranty

2 years brick · 1 year fiber

From Jen-Ken to the original purchaser, limited to repair or replacement of defective items. Elements and thermocouples carry their own 2-year coverage, though thermocouples are not warranted against breakage. Ask us which line your kiln falls under.

Why buy from Peach State Pottery?

★ Authorized Jen-Ken Dealer

★ No sales tax outside Georgia

★ Flat-rate shipping, quoted at checkout

★ Real support before & after order

★ Military discount for veterans

★ We are here if anything goes wrong

Call or text us:✆ (470) 264-3563

⏱

Order now to hold today's price

Jen-Ken builds to order, so your place in the production schedule is set when you order. Talk to us about voltage, controller and furniture kit choices before you buy — they are all decided at order time.

✆ Call or text us ✉ Save 3% with wire transfer