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Jen-Ken AF 24/31 Mega Coil Electric Ceramic Kiln – Deep 240V Pottery Kiln Cone 10

Original price $0.00 - Original price $0.00
Original price $0.00
$4,469.20
$4,469.20 - $4,469.20
Current price $4,469.20
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Shipping & Lead Times

DUE TO BRICK SHORTAGE, THESE TIME FRAMES MIGHT BE SLIGHTLY LONGER**

Made-to-Order kilns are built from scratch and have different lead times* Most kilns listed are made-to-order. Contact us for specific order times.

Quick Ship Kilns: Ship in 1-2 weeks

Estimated Lead Times Per Brand

Evenheat Kilns Lead Times: 6-8 weeks

Jen Ken Kilns Lead Times: 12-16+ weeks

Olympic Kilns Lead Times: 8-12 weeks

Speedball Wheels: Usually ship within 10 days. 

HotShotOvens: 2-4 days.

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  • Price Beat Guarantee: We’ll beat any advertised price. Call (801) 839-5882.
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We’re here for the long haul—not just to make the sale, but to help you get the best results from your kiln and equipment.
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Price Guarantee

Lowest Price Guarantee

At ProKilnSupply, we want you to feel confident that you are getting a competitive price when you shop with us. When a product on our site is marked with our Lowest Price Guarantee, it means we stand behind that price.

If you find the same item offered online at a lower total price within 30 days of your purchase, let us know. If the listing qualifies under the terms below, we will refund you the difference.

We want every customer to shop knowing they are getting excellent value on their kiln or wheel.

How to Request a Price Difference Refund

To request a refund for the price difference, email us a link to the competing online listing within 30 days of your order date. Once we review the listing and confirm that it meets the requirements below, we will issue the appropriate credit.

Eligibility Requirements

Our Lowest Price Guarantee applies only when all of the following conditions are met:

  • The item must have been purchased first from ProKilnSupply
  • The competing offer must be from an online-only retailer
  • Promotional pricing, coupon offers, clearance deals, and limited-time specials are not eligible
  • Auction sites, marketplaces, and discounter platforms such as eBay are not eligible
  • The competing seller must be an authorized retailer for the brand
  • The competitor’s total advertised price must include shipping, handling, and any processing fees
  • The product must be an exact match, including the same model and availability status, such as in stock vs. in stock or made to order vs. made to order
  • The manufacturer must be Evenheat Kiln, Jen-Ken Kilns, or Paragon Industries

Additional Terms

ProKilnSupply reserves the right to deny any request that does not meet these requirements or appears to fall outside a reasonable and fair market price comparison.

The Deep Mega Coil for Tall Vessels, Totems, and Sculpture

Most kilns are built around width. The Jen-Ken AF 2431 Mega Coil is built around height. At 31" deep, this kiln can fire pieces that simply won't fit in standard studio kilns. Tall vases, totem sculptures, large floor vessels, multi part figurative work, you name it. If your hands have been making the work but your kiln has been forcing you to keep it short, this is the kiln that lets you go vertical.

Same Mega Coil technology that makes the Jen-Ken Mega Coil series last 10 to 15 years longer than similar size kilns on the market. Six oversized super heavy gauge Mega Coils, one per full brick, with more element material than standard coils so they take longer to wear out. When the day comes that you do need a swap, the color coded wiring uncouples in seconds and you can change a coil yourself in about 10 minutes.

Inside, you've got a 24" wide by 31" deep chamber with 8.11 cubic feet of capacity. The 3" firebrick walls hold heat well, keep firings efficient, and let the elements work less than they otherwise would. The kind of construction that adds up to years of extra service.

The AF 2431 fires up to 2300°F (Cone 8), perfect for earthenware, low to mid fire stoneware, glaze work, and bisque firings. Runs on a standard 240V at 45 amps with a NEMA 6-50 plug, 10,800 watts.

Included with every order

A lid lifter to take the weight out of opening the kiln, a heavy duty stand sized for this model, the wall hanging digital Orton controller, the full operator manual, a solid state relay (SSR) for tighter temperature control and longer element life, a 2 year limited warranty through Jen-Ken, and free freight shipping to the US Lower 48.

Who Is This Kiln For?

The AF 2431 Mega Coil is built for a specific kind of potter or sculptor. Here's how to tell if that's you.

✓ Potters making tall vessels and vases

31" deep means you can finally fire those tall floor vases, tall lidded jars, and architectural vessels without compromising your designs to fit a shorter kiln.

✓ Sculptors working in clay

Totem pieces, figurative work, and multi section sculptural builds all fit in the 31" depth. No more cutting your work apart just to fire it.

✓ Production potters who fire often

The Mega Coil technology saves you years of element replacements and downtime, and the deeper chamber lets you stack more shelves for big loads of smaller work too.

✓ Artists who want a kiln that lasts

If you're investing in a kiln you plan to keep for 20+ years, the Mega Coil technology and self serviceable coil swaps make this one of the most maintainable kilns in the catalog.

The AF 2431 ships with the wall hanging digital Orton AutoFire 12 Key standard. This controller mounts on the wall away from the kiln heat, keeping its components cool and extending its life. It comes loaded with full cone fire schedules in slow, medium, and fast, plus 9 user programs for custom firings, and a 60 amp mercury relay built in. It also tracks the cost of each firing, the time it took, and the temperature you achieved, useful data if you're watching margins. Upgrade options include the AutoFire Slide touchscreen and the TAP Smart Controller with Wi Fi.

Key Features

  • 31" deep chamber for tall vessels, totem sculpture, and pieces that won't fit standard kilns
  • Mega Coil technology with 6 oversized heavy gauge coils for 10 to 15 years more kiln life
  • 10 minute self serviceable coil swaps with color coded wiring, no repair tech required
  • 24" x 31" firing chamber with 8.11 cubic feet of capacity
  • 3" firebrick construction for strong heat retention and efficient firings
  • Fires up to 2300°F (Cone 8), great for earthenware, stoneware, and glaze work
  • 240V / 45 amp NEMA 6-50 plug, 10,800 watts
  • Wall hanging digital Orton controller with 60 amp mercury relay, cost tracking, and 9 user programs (kept cool away from kiln heat)
  • Lid lifter included free, so opening and closing the deep kiln is easy on your back
  • Solid State Relay (SSR) included free for quieter operation, tighter temperature control, and longer element life
  • 2 year limited warranty from Jen-Ken plus free freight shipping to the US Lower 48

Specifications

Model Jen-Ken AF 2431 Mega Coil 3"
Inside Dimensions 24" x 31"
Volume 8.11 cu ft
Maximum Temperature 2300°F (Cone 8)
Voltage 240V
Amps 45
Watts 10,800
Plug Type NEMA 6-50
Brick Thickness 3"
Number of Coils 6 Mega Coils
Product Weight 300 lbs
Shipping Weight 350 lbs
Warranty 2 Year Limited (Jen-Ken)

Got tall work that needs a deep kiln?

Give us a call. We'll talk through the size of your work, your studio setup, and your firing schedule, and help you figure out if the AF 2431 is the right fit.

📞 (801) 839-5882

Monday to Friday, 9AM to 5PM MST

FAQ - KILNS

What to consider when buying a Kiln

1. What are you firing?
Different materials have different temperature requirements. Pottery and stoneware need to reach cone 6–10 (around 2200–2350°F), while glass fusing works at lower temperatures but demands very precise, programmable cooling. Knowing your primary material upfront narrows your options significantly.

2. How much volume do you need?
Think about how many pieces you fire per week. Hobbyists and home studios generally do well with kilns under 5 cubic feet. Working artists typically need 5–10 cubic feet, and classroom or production studios often require 10+. A good rule of thumb: buy slightly larger than you think you need — you can always fire a half-full kiln, but you can't fire a piece that doesn't fit.

3. Check your electrical setup before you buy
Most mid-to-large kilns require a 240V dedicated circuit, which may need to be installed by a licensed electrician. Smaller kilns may run on standard 120V. Always check the kiln's amperage requirements against your existing panel before purchasing — electrical upgrades can add $200–$500 to your setup cost.

4. Manual vs. digital controller
Manual kilns use switches you adjust by hand throughout the firing, requiring you to stay close. Digital controllers let you program a firing schedule and walk away. For most potters today, a digital controller is worth the extra cost — the results are more consistent and the convenience is hard to give up once you've had one.

5. Don't forget ventilation
Kilns release fumes from clay, glazes, and organic materials during firing. A downdraft vent system is strongly recommended for any indoor studio. It protects your health, improves firing results, and extends the life of your elements. Budget around $150–$300 for a quality vent, and factor it into your total setup cost from the start.

6. Think about long-term running costs
The purchase price is just the beginning. Heating elements need replacing every 100–200 firings ($100–$300 depending on kiln size). Electricity costs $2–$8 per firing depending on your kiln size and local rates. You'll also need kiln furniture — shelves, posts, and stilts — which are typically sold separately and are essential from day one.

What size kiln do I need for my studio?

The right size depends on how much you fire and how often. Hobby potters or small home studios generally do well with a compact kiln (under 5 cubic feet), while working artists and classroom studios benefit from a larger kiln like the Olympic Champ XL. Consider how many pieces you fire per week — if you're constantly waiting to fill a small kiln, it's time to size up. It's usually better to buy slightly larger than you think you need.

What's the difference between a top-loading and front-loading kiln

Top-loading kilns are the most common for pottery and ceramics. They're more energy-efficient, easier to load evenly, and generally more affordable. Front-loading kilns (also called car kilns or door kilns) are better suited for large sculptural work or production studios where loading heavy pieces at waist height is more practical. For most potters, a top-loader like the Champ XL is the right choice.

What electrical requirements does this kiln need?

Electrical requirements vary by kiln model and size. Many mid-size and larger kilns require a dedicated 240V circuit, while some smaller models may operate on 120V. It is important to check the kiln’s specifications for the correct voltage, amperage, outlet type, and breaker requirements before installation. A qualified electrician should handle installation if a new circuit or outlet is needed. Never use a kiln with an outlet or circuit that does not match the manufacturer’s requirements.

Can I fire both pottery and glass in the same kiln?

Yes, in some cases — but it depends on the kiln and how you plan to use it. Many electric kilns can be used for both pottery and glass, but the firing schedules for each are very different. Glass typically requires slower, more precise heating and cooling cycles to help prevent cracking, while pottery firing follows different temperature and timing needs. If you plan to fire both, a kiln with a programmable controller is especially helpful for managing and switching between firing programs. Always check the kiln manufacturer’s recommendations before using it for multiple materials.

What cone temperatures can this kiln reach?

The cone temperature a kiln can reach depends on the specific model. Many ceramic kilns are designed to fire anywhere from low-fire ranges like cone 06–04 up through mid-fire and, in some cases, high-fire ranges such as cone 8–10. Always check the kiln’s product specifications to confirm its maximum cone rating and make sure your clay and glaze are compatible with that firing range.

Do I need a kiln vent, and is one included?

A kiln vent is strongly recommended, though it may not be included with your kiln purchase. During firing, kilns release fumes from clay, glazes, and organic materials — these can be harmful in an enclosed space. A downdraft vent system pulls air through the kiln and exhausts it outside, protecting both you and your work. Even if your studio has good airflow, a dedicated vent improves firing results and extends the life of your elements and lid.

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