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Slightly-left angled view of opened, oval-shaped AFG Oval 13 glass kiln from Jen-Ken with electrical box on front right corner of kiln with the Orton AutoFire 4000 12-button controller.

Jen-Ken AFG Oval 13 Glass Kiln

Save $906.00
$4,528.00
$3,622.00
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.

The ultimate studio kiln for serious glass artists, this spacious oval model handles multiple large pieces or sinks with ease. Durable brick construction and precise digital controls make it a dependable favorite for fusing, slumping, and production work.

Important Details:

  • Chamber size: 39” W x 24” D x 13” H
  • Volume: 7.2 cubic feet
  • Maximum temperature: 1700°F
  • Electrical: 240V, 45A, NEMA 6-50 plug
  • Breaker: 60A required

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 AFG Oval 13 Glass Kiln

Affectionately known as the “bathtub kiln,” the Jen-Ken AFG Oval 13 is a powerhouse designed for artists and studios that need serious capacity. Its expansive 39″ × 24″ × 18″ chamber easily handles two 20″ plates, a large sink mold, or multiple smaller projects at once. Ideal for glass fusing and slumping, this kiln combines size, reliability, and durability, making it perfect for studio classrooms or mid-range production work. Its sturdy brick construction ensures excellent heat retention and flawless annealing, while the included lid lifters make operation smooth and effortless.

Controller Options

The kiln comes standard with the Orton AutoFire 4000 12-Key Controller, offering precise digital control for consistent results. For an upgraded firing experience, two touchscreen options are also available:

  • Orton AutoFire Slide Touchscreen – modern, easy-to-use interface with intuitive programming.

  • TAP II Touchscreen Smart Controller – full-featured connectivity with Wi-Fi access, mobile app integration, and firing data tracking.

Optional Add-Ons

Add an SSR (Solid State Relay) for quieter, more efficient temperature control, or include a Furniture Kit for flexible shelf arrangements and multi-level firings. An optional viewing window is also available for visual monitoring during firing.

What’s Included

  • Orton AutoFire 4000 12-Key Controller (standard)

  • Kiln Stand

  • Lid Lifters

  • Instruction Manual

  • 2-Year Limited Warranty (on kiln and controller)

Beloved by glass artists and educators alike, the Oval 13 delivers dependable performance, generous space, and rugged build quality — a true studio workhorse that earns its nickname with every firing.

  • Model: AFG Oval 13" Glass
  • Inside Chamber Dimensions: 39” W x 24” D x 13” H
  • Cubic Feet: 7.2
  • Maximum Temperature: 1700°F
  • Elements: Top, Side firing
  • Kiln weight: 300 pounds
  • Volts: 240
  • Amperage: 45A
  • Watts: 10,800
  • Plug configuration: NEMA 6-50
  • Breaker: 60A
  • Circuit wire gauge: 6

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 AFG Oval 13 Glass Kiln

Affectionately known as the “bathtub kiln,” the Jen-Ken AFG Oval 13 is a powerhouse designed for artists and studios that need serious capacity. Its expansive 39″ × 24″ × 18″ chamber easily handles two 20″ plates, a large sink mold, or multiple smaller projects at once. Ideal for glass fusing and slumping, this kiln combines size, reliability, and durability, making it perfect for studio classrooms or mid-range production work. Its sturdy brick construction ensures excellent heat retention and flawless annealing, while the included lid lifters make operation smooth and effortless.

Controller Options

The kiln comes standard with the Orton AutoFire 4000 12-Key Controller, offering precise digital control for consistent results. For an upgraded firing experience, two touchscreen options are also available:

  • Orton AutoFire Slide Touchscreen – modern, easy-to-use interface with intuitive programming.

  • TAP II Touchscreen Smart Controller – full-featured connectivity with Wi-Fi access, mobile app integration, and firing data tracking.

Optional Add-Ons

Add an SSR (Solid State Relay) for quieter, more efficient temperature control, or include a Furniture Kit for flexible shelf arrangements and multi-level firings. An optional viewing window is also available for visual monitoring during firing.

What’s Included

  • Orton AutoFire 4000 12-Key Controller (standard)

  • Kiln Stand

  • Lid Lifters

  • Instruction Manual

  • 2-Year Limited Warranty (on kiln and controller)

Beloved by glass artists and educators alike, the Oval 13 delivers dependable performance, generous space, and rugged build quality — a true studio workhorse that earns its nickname with every firing.

Specifications
  • Model: AFG Oval 13" Glass
  • Inside Chamber Dimensions: 39” W x 24” D x 13” H
  • Cubic Feet: 7.2
  • Maximum Temperature: 1700°F
  • Elements: Top, Side firing
  • Kiln weight: 300 pounds
  • Volts: 240
  • Amperage: 45A
  • Watts: 10,800
  • Plug configuration: NEMA 6-50
  • Breaker: 60A
  • Circuit wire gauge: 6
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.