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We have a Jen-Ken 15/13 "The Emerge" Ceramic/Pottery Kiln READY TO SHIP! Click here.
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Straight-on, fully-opened, round-shaped JK-squared 22-inch ceramic kiln from Jen-Ken with an Orton AutoFire 4000 12-button controller, and sitting on a small metal stand.

Jen-Ken AF JK² 22" Ceramic Kiln

Save $935.00
$4,673.00
$3,738.00
Financing Information i

Financing through Approve is exclusively for business equipment loans and is available to all types of organizations, excluding personal loans. Minimum purchase price of $1,500.

A spacious square kiln designed for large low-fire ceramics like yard art, holiday trees, and slip-cast pieces. Easy to load, reliable, and ideal for home studios or teaching spaces. Optional controller upgrades and accessories allow you to tailor performance to your workflow.

Important Details:

  • Chamber size: 27" W x 27" D x 22" H
  • Volume: 9.0 cubic feet
  • Maximum temperature: 2100°F
  • Electrical: 240V/45A, NEMA 6-50 plug
  • Required breaker: 60A

iNot sure what product options to choose? Check out our Kiln FAQs below!

Controller selection
Relay selection
Furniture selection

Need a formal quote or to request a W9? Let us know!

Interested in all Reviews ever provided to Pottery Pulse, regardless of product? Click here.

Jen-Ken AF3C JK² 22″ Square Ceramic Kiln – Built for Large Low-Fire Creations

The Jen-Ken AF3C JK² 22" Square Kiln (also known as the JK² or JK Squared) is purpose-built for artists who work big — from yard ornaments and slip-cast molds to large ceramic Christmas trees and specialty low-fire pieces. Its wide square chamber provides exceptional loading flexibility and maximizes usable shelf space, making it easier to fire large or awkwardly shaped creations than in round kilns of similar size.

Engineered for low-fire ceramics, this kiln excels at cone 04–06 clay bodies, bisque firing, and earthenware production. With a max temperature of 2300°F, it can reach cone 5–8 for occasional high-fire work, but it is optimized for low-fire use and is not intended for frequent high-fire cycles.

Lid lifters come standard, meaning even large, heavy kiln lids lift smoothly with minimal effort — protecting both your back and your ware.

Choose Your Controller

Comes standard with the Orton AutoFire 3-Key Controller, offering reliable cone-fire programs and six customizable user schedules. Upgrade if you prefer advanced programming or touchscreen convenience:

  • Orton AutoFire 12-Key Controller (AF/AFG)
    Expanded program control and compatibility with zone control (with additional thermocouples).

  • Orton AutoFire Slide Touchscreen Controller
    Easy-to-navigate touchscreen, P-I-D accuracy, and multiple program storage.

  • TAP Touchscreen Smart Controller
    Wi-Fi, cloud backup, remote firing control, and unlimited program storage — the most intuitive and powerful option.

Optional Upgrades

Solid-State Relays (SSRs)
Enjoy silent operation, smoother heating cycles, and longer relay life — ideal for frequent firing schedules.

Furniture Kit
Add shelves, posts, and kiln wash to support large molds, trees, and slip-cast batches. Essential for maximizing loading strategy and protecting kiln surfaces.

Key Features

  • Designed for large low-fire ceramic work

  • Square 22” firing chamber for wide / tall pieces

  • Max temp 2300°F (low-fire optimized, occasional mid-range capability)

  • Lid lifters included for effortless operation

  • Ideal for yard art, holiday ceramics, slip-cast ware, & classroom projects

  • Compatible with Orton Downdraft Vent System and zone control options

  • Includes stand, instruction manual, and 2-year limited warranty

Made for Ceramicists Who Think Big

If you regularly fire large low-fire pieces, molds, or holiday ceramics and need generous loading space with smooth, reliable operation, the JK² 22" kiln is built for you. Spacious, efficient, and easy to load — it brings production-kiln convenience to the studio level.

  • Model: AF JK² 22"
  • Inside Chamber Dimensions: 27" W x 27" D x 22" H
  • Cubic Feet: 9.0
  • Maximum Temperature: 2100°F/1149°C
  • Elements: side firing
  • Kiln weight: 225 pounds
  • Amperage/volts: 45 at 240 volts
  • Watts: 10,800
  • Breaker: 60 amp required
  • NEMA 6-50 Plug
  • Circuit wire gauge: 8

The furniture kit option includes:

  • 3 layers of shelves: 6 half
  • 6 each: 1, 2, 4, and 6 inch posts
  • 1 pound of shelf primer

Estimated order-to-ship lead time is approximately 6 weeks.

We get it. You've got a lot of choices when it comes to online retailers. Here's why we think you should shop with us at Pottery Pulse.

If this specific product has already been reviewed, you will find it below all the product information tabs, and above the "You may also like..." section.

If it has not, you can still find all reviews left from Pottery Pulse customers at this Reviews page on our site. Please click that link and read what other customers are saying as you consider whether or not to provide your business to Pottery Pulse.

We are confident we sell outstanding products from outstanding manufacturers, and that we'll top the best customer experience you can find anywhere. We are devoted to our customers because we simply are out of business without them.

Simply put, you could say that makes you the center of our universe.

FAQs - Configuring Your Kiln

There are certain selections you must choose. And then there are options you can click on or ignore. The answers below should help you make the best choices for you.

 Which Kiln Voltage Should I Select?

Higher voltage means lower amperage draw and greater efficiency, which can save money long term. 240V and 208V cost the same—most home studios use 240V, while 208V is common in schools or large facilities. Amperage refers to the amount of electrical current a kiln draws—higher amps require heavier wiring and breakers.

What's The Difference Between Single-Phase and Three-Phase?

Single-phase is what almost all homes have. If your facility has three-phase, you can choose either—but three-phase is typically the better long-term option due to smoother power and improved efficiency.

Which Relay Option Do I Need?

Mechanical relays are standard and reliable. Solid-state relays (SSR) offer silent operation, faster cycling, greater precision, and longer lifespan—ideal for frequent or high-accuracy firings.

What Are The Differences Between Kiln Controllers?

The following controllers are used across kilns sold by Pottery Pulse. Not all models offer every option—available controllers are listed on each product page. Some kilns include only the standard controller, while most allow upgrades for added precision and convenience.

Olympic Kilns

  • Infinite Switch – Manual dial control for simple heat adjustments.
  • KilnStar – Digital controller with preset and user-defined programs.
  • Genesis – Advanced touchscreen interface with Wi-Fi and data logging.

Evenheat Kilns

  • Icon – Digital 3-button controller for straightforward firing.
  • RampMaster II – Manual digital controller for ceramic kilns; flexible ramp/hold programming.
  • RampMaster 3 – Updated version for glass kilns with refined interface.
  • Icon+ – Enhanced digital control with expanded profiles and precision.
  • TAP II – Smart touchscreen controller with Wi-Fi, data tracking, and remote access.

Hot Shot Kilns

  • Novus – “Set & Go” controller: set a target temperature and it does the rest (no segments).
  • Spark – Entry-level touchscreen controller with intuitive operation and limited program control.
  • TAP II – Smart touchscreen controller with Wi-Fi and real-time monitoring.

Jen-Ken Kilns

  • Orton AF3P 3-Button – Reliable and straightforward for basic firing.
  • Orton AutoFire 4000 12-Key – Expanded program capacity and fine control.
  • Orton AutoFire Slide Touchscreen – Modern, responsive touchscreen interface.
  • TAP II Touchscreen Smart Controller – Wi-Fi connectivity and real-time data tracking.

What Are Collars For?

Not all kilns can use a collar, but Olympic’s Hot Box kilns can be ordered with a collar to expand versatility. A blank collar simply adds height to the firing chamber, while a bead collar adds the same height and includes a built-in bead or annealing door for quick-access lampwork projects.

What Does The Power Interrupt Switch Do?

This safety feature automatically cuts power to the heating elements whenever the kiln lid or door is opened. It prevents accidental burns, protects elements, and resumes power only when safely closed. (Also called an automatic lid shutoff on Olympic kilns.)
Description

Jen-Ken AF3C JK² 22″ Square Ceramic Kiln – Built for Large Low-Fire Creations

The Jen-Ken AF3C JK² 22" Square Kiln (also known as the JK² or JK Squared) is purpose-built for artists who work big — from yard ornaments and slip-cast molds to large ceramic Christmas trees and specialty low-fire pieces. Its wide square chamber provides exceptional loading flexibility and maximizes usable shelf space, making it easier to fire large or awkwardly shaped creations than in round kilns of similar size.

Engineered for low-fire ceramics, this kiln excels at cone 04–06 clay bodies, bisque firing, and earthenware production. With a max temperature of 2300°F, it can reach cone 5–8 for occasional high-fire work, but it is optimized for low-fire use and is not intended for frequent high-fire cycles.

Lid lifters come standard, meaning even large, heavy kiln lids lift smoothly with minimal effort — protecting both your back and your ware.

Choose Your Controller

Comes standard with the Orton AutoFire 3-Key Controller, offering reliable cone-fire programs and six customizable user schedules. Upgrade if you prefer advanced programming or touchscreen convenience:

  • Orton AutoFire 12-Key Controller (AF/AFG)
    Expanded program control and compatibility with zone control (with additional thermocouples).

  • Orton AutoFire Slide Touchscreen Controller
    Easy-to-navigate touchscreen, P-I-D accuracy, and multiple program storage.

  • TAP Touchscreen Smart Controller
    Wi-Fi, cloud backup, remote firing control, and unlimited program storage — the most intuitive and powerful option.

Optional Upgrades

Solid-State Relays (SSRs)
Enjoy silent operation, smoother heating cycles, and longer relay life — ideal for frequent firing schedules.

Furniture Kit
Add shelves, posts, and kiln wash to support large molds, trees, and slip-cast batches. Essential for maximizing loading strategy and protecting kiln surfaces.

Key Features

  • Designed for large low-fire ceramic work

  • Square 22” firing chamber for wide / tall pieces

  • Max temp 2300°F (low-fire optimized, occasional mid-range capability)

  • Lid lifters included for effortless operation

  • Ideal for yard art, holiday ceramics, slip-cast ware, & classroom projects

  • Compatible with Orton Downdraft Vent System and zone control options

  • Includes stand, instruction manual, and 2-year limited warranty

Made for Ceramicists Who Think Big

If you regularly fire large low-fire pieces, molds, or holiday ceramics and need generous loading space with smooth, reliable operation, the JK² 22" kiln is built for you. Spacious, efficient, and easy to load — it brings production-kiln convenience to the studio level.

Specifications
  • Model: AF JK² 22"
  • Inside Chamber Dimensions: 27" W x 27" D x 22" H
  • Cubic Feet: 9.0
  • Maximum Temperature: 2100°F/1149°C
  • Elements: side firing
  • Kiln weight: 225 pounds
  • Amperage/volts: 45 at 240 volts
  • Watts: 10,800
  • Breaker: 60 amp required
  • NEMA 6-50 Plug
  • Circuit wire gauge: 8

The furniture kit option includes:

  • 3 layers of shelves: 6 half
  • 6 each: 1, 2, 4, and 6 inch posts
  • 1 pound of shelf primer
Current lead times

Estimated order-to-ship lead time is approximately 6 weeks.

Why Buy From Us

We get it. You've got a lot of choices when it comes to online retailers. Here's why we think you should shop with us at Pottery Pulse.

Customer Reviews

If this specific product has already been reviewed, you will find it below all the product information tabs, and above the "You may also like..." section.

If it has not, you can still find all reviews left from Pottery Pulse customers at this Reviews page on our site. Please click that link and read what other customers are saying as you consider whether or not to provide your business to Pottery Pulse.

We are confident we sell outstanding products from outstanding manufacturers, and that we'll top the best customer experience you can find anywhere. We are devoted to our customers because we simply are out of business without them.

Simply put, you could say that makes you the center of our universe.