Jen-Ken Kiln - Vertical Air Bath 21

Save $ 183.00

4 reviews
Sale price$ 1,628.00 Regular price$ 1,811.00
Buy Now, Pay Later
withBread Pay Logo


Model: Jen-Ken Vertical Air Bath 21
Inside Dim: 11" (width) x 21" (depth)
Max Temp: Fires to 2200° F
Voltage: 240 volts
Amperage: 22 amps
Watts: 5,520 watts
Receptacle: 6-30R
Ship Wt: 125#  (freight)



  • FREE SHIPPING in the contiguous US!
  • 3-Key Digital Orton Controller
  • Cool Touch Reversible Lid Lift Handle
  • Reinforced Ceramic Baffle Rods
  • Suspension Spring Holders and Pin Hangers
  • Rolling Stand with Casters
  • Loud Alarm
  • Power Interrupt Lid Switch
  • Mechanical Relays
  • Instruction Manual
  • 2-Year Limited Warranty (The manufacturer's warranty as well as the optional add-on Extended Warranty Protection Plan do not cover a service contractor to provide in-home kiln repairs.)

Go VERTICAL like the Pros... Introducing the Revolutionary Vertical Air Bath Heat Treating Oven!

***NEW*** ALL controller choices are pre-programmed with schedules for 1084, 1095, 5210, 5160, & 440C!

The Vertical Air Bath delivers unparalleled heat distribution as blades are suspended vertically inside the chamber delivering 360°of uniform heat!  This unique top-loading design with upright blade suspension helps reduce internal stress and prevents warps. 

The refractory brick chamber of the Vertical Air Bath is heated from above and below the specially designed baffle with coils in both the body and lid allowing it to heat to 1500F in about 60 minutes! This dual heating combination is also ideal as it provides quicker interior heat recovery. As you open the lid, the standard power-interrupt switch automatically de-energizes the coils allowing you to safely reach in to remove your blades. Plus, the configurable baffle design and large chamber allow blades of all shapes and sizes to process together!

Vertical Air Bath Features

Suspension Spring Holders and Pin Hangers - Blades in the Vertical Air Bath can be suspended several ways.... either a pin through the tang, a spring clasped to the tang, or you can simply turn the tang sideways between the movable ceramic rods. Foil wrapped blades can also be suspended by passing the support pin through the foil sheet or via the spring clasp method. This versatility allows the vertical suspension format to be used with almost every heat treating technique.

Lid Lift Handle - One of our favorite features of the Vertical Air Bath is the reversible, cool touch handle. When standing to the side of the oven, the lid of the Vertical Air Bath can be easily lifted without a blast of heat. The blade can then be removed quickly allowing for minimal heat loss and ease of use.

Digital Controller - All Vertical Air Bath models come standard with a 3-button AF3C Controller loaded with the most popular normalizing, tempering, and heat treatment schedules. Upgrades to a 12-button controller for ease of programming or the popular TAP smart touchscreen controller, are also available.

Why Upgrade from Mechanical Relays to Solid-State Relays?      

Mechanical Relays, which come standard on most kilns have internal moving parts which over time wear out and need to be replaced.  Kiln manufacturers recommend you replace your mechanical relays approximately every 2 years.  Solid-state relays have no moving parts and last far longer than standard mechanical relays and offer far better temperature control during hold times.  Since solid-state relays also have no moving parts to wear out, they NEVER need to be replaced.  You will notice that solid-state relays are silent.  The only sound you will hear is just the reassuring hum of the heating elements.  So, this factory upgrade saves you potential down time from having to wait for new relays to arrive, potential over-fires from relays sticking in the closed position, potential aggravation from having to learn how to remove and replace the mechanical relays yourself.  We think this upgrade is well worth the cost and will save you time and aggravation over the life of your kiln.


Customer Reviews
4.8 Based on 4 Reviews
5 ★
4 ★
3 ★
2 ★
1 ★
Write a Review

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
David V.
United States United States

Lion Frog is Excellent

I purchased a kiln and quench tank from them and it all came quicker than estimated. They communicated every step of the way and followed up until everything was delivered.

John Z.
United States United States
I recommend this product

So far so good

All the components came with the kiln and nothing missed or broken. The instruction manual was clear. Programming is easy. It hits temperature quickly given the volume of air. No complaints.

Joe M.
United States United States


The overall experience was excellent! Even with the programming not set for knives it gave me a chance to learn this kiln before using it. Customer service was great! It was easy to get in touch woth someone with any questions I had on the verticals kiln. I’m definitely buying from you all again. Thank you!!

Todd B.
United States

Great heat treat oven

Love the oven. Easy to operate. No complaints