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Slightly left-angled view of opened, oval-shaped AF 27 ceramic kiln from Jen-Ken, featuring 3" chamber brick, showing the electrical box with the Orton AutoFire 4000 12-button controller.

Jen-Ken AF Oval 27 3" Ceramic Kiln

Save $1,354.00
$6,768.00
$5,414.00
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.

High-capacity, low-fire ceramic kiln built for schools and paint-your-own-pottery studios. With massive oval interior space and smooth lid lifters, it delivers efficient, consistent production for Cone 04–06 firing. Ideal for high-volume daily use.

Important Details:

  • Chamber size: 39" x 24" x 27"
  • Volume: 14.0 cubic feet
  • Maximum temperature: 2250°F
  • Electrical: 240V/55A, Direct Wired
  • Required breaker: 70A

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 AF Oval 27 3" Ceramic Kiln — Massive Capacity for High-Volume Low-Fire Studios

The Jen-Ken AF Oval 27 3" — known as the “bathtub kiln” — delivers the capacity of two kilns in one, making it ideal for paint-your-own pottery studios, schools, and commercial ceramic environments firing large volumes of low-fire ware. Its wide, deep oval chamber easily handles oversized pieces, tall forms, and full production loads with space to spare.

Built with premium 3" firebrick, this kiln offers superior heat retention and consistent results firing after firing. Lid lifters are standard, providing near-effortless opening and closing, even with heavy studio use.

Engineered for high-demand low-fire work (Cone 04–06), the AF Oval 27 provides studio-scale output on a single, efficient unit — helping you maximize throughput, reduce wait times, and streamline firing cycles.

Controller Options

Standard – Orton AutoFire 12-Key Controller
Reliable, easy operation with cone-fire programs and user memory slots for repeatable, consistent results.

Optional Upgrades

  • Orton AutoFire Slide Touchscreen Controller — PID accuracy + intuitive touchscreen programming

  • TAP Touchscreen Smart Controller — Wi-Fi capable, unlimited custom programs, real-time firing control

Optional Upgrades

Furniture Kit
Shelves, posts, and kiln wash to fully utilize the kiln’s large interior for multi-level bisque and glaze firings.

Solid-State Relays
Silent, precise power delivery, extending relay life and improving temperature consistency for studios firing frequently.

Key Features

  • Massive oval interior — like two kilns in one

  • Best for high-volume low-fire ceramics (Cone 04–06)

  • 3" firebrick for superior insulation & efficiency

  • Lid lifters included for smooth, safe lifting

  • Ideal for schools & PYOP studios

  • Includes stand, manual & 2-year warranty

  • Backed by 60+ years of Jen-Ken quality

  • Model: AF Oval 27- 3"
  • Inside Chamber Dimensions: 39" x 24" x 27"
  • Cubic Feet: 14.0
  • Maximum Temperature: 2250°F/1232°C
  • Elements: side firing
  • Kiln weight: 425 pounds
  • Amperage/volts: 55 at 240 volts
  • Watts: 13,200
  • Breaker: 70 amps required
  • Direct wired
  • Circuit wire gauge: 4
  • 4 layers of shelves: 8 ″D″ shaped half shelves
  • 6 each: 1, 2, 4, 6, and 8 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 AF Oval 27 3" Ceramic Kiln — Massive Capacity for High-Volume Low-Fire Studios

The Jen-Ken AF Oval 27 3" — known as the “bathtub kiln” — delivers the capacity of two kilns in one, making it ideal for paint-your-own pottery studios, schools, and commercial ceramic environments firing large volumes of low-fire ware. Its wide, deep oval chamber easily handles oversized pieces, tall forms, and full production loads with space to spare.

Built with premium 3" firebrick, this kiln offers superior heat retention and consistent results firing after firing. Lid lifters are standard, providing near-effortless opening and closing, even with heavy studio use.

Engineered for high-demand low-fire work (Cone 04–06), the AF Oval 27 provides studio-scale output on a single, efficient unit — helping you maximize throughput, reduce wait times, and streamline firing cycles.

Controller Options

Standard – Orton AutoFire 12-Key Controller
Reliable, easy operation with cone-fire programs and user memory slots for repeatable, consistent results.

Optional Upgrades

  • Orton AutoFire Slide Touchscreen Controller — PID accuracy + intuitive touchscreen programming

  • TAP Touchscreen Smart Controller — Wi-Fi capable, unlimited custom programs, real-time firing control

Optional Upgrades

Furniture Kit
Shelves, posts, and kiln wash to fully utilize the kiln’s large interior for multi-level bisque and glaze firings.

Solid-State Relays
Silent, precise power delivery, extending relay life and improving temperature consistency for studios firing frequently.

Key Features

  • Massive oval interior — like two kilns in one

  • Best for high-volume low-fire ceramics (Cone 04–06)

  • 3" firebrick for superior insulation & efficiency

  • Lid lifters included for smooth, safe lifting

  • Ideal for schools & PYOP studios

  • Includes stand, manual & 2-year warranty

  • Backed by 60+ years of Jen-Ken quality

Specifications
  • Model: AF Oval 27- 3"
  • Inside Chamber Dimensions: 39" x 24" x 27"
  • Cubic Feet: 14.0
  • Maximum Temperature: 2250°F/1232°C
  • Elements: side firing
  • Kiln weight: 425 pounds
  • Amperage/volts: 55 at 240 volts
  • Watts: 13,200
  • Breaker: 70 amps required
  • Direct wired
  • Circuit wire gauge: 4
The furniture kit option includes:
  • 4 layers of shelves: 8 ″D″ shaped half shelves
  • 6 each: 1, 2, 4, 6, and 8 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.