SKU: 58939439242

HUUM UKU Extension Box for Heaters 12 kW & Up

Sale price$271.35 Regular price$301.50
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Ships within 48 hours · Estimated delivery Sep 10 - Sep 15

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Description

HUUM UKU Extension Box for Heaters 12 kW & UpHUUM UKU Extension Box for Heaters 12 kW & Up For use with HUUM UKU Controllers, the HUUM Extension Box is required for all HUUM sauna heaters 12kW and larger. Specifications Wall mounted Dimensions: 7"W (177. 8mm) x 7"D (177. 8mm) x 6"H (152. 4mm) Volts: 240 Amps: 2x63 Package Includes: Extension box Installation and operation manual 5 Year Limited Warranty Warranty HUUM LIMITED 5 YEAR WARRANTY General: The purchaser is obliged to review the user

HUUM UKU Extension Box for Heaters 12 kW & Up

For use with HUUM UKU Controllers, the HUUM Extension Box is required for all HUUM sauna heaters 12kW and larger.

Specifications
  • Wall mounted
  • Dimensions: 7"W (177.8mm) x 7"D (177.8mm) x 6"H (152.4mm)
  • Volts: 240
  • Amps: 2x63

Package Includes:

  • Extension box
  • Installation and operation manual
  • 5-Year Limited Warranty
Warranty

HUUM LIMITED 5-YEAR WARRANTY

General:

The purchaser is obliged to review the user manual of the product and follow the requirements stated therein. The warranty does not extend to failures due to non-compliance with the rules of use provided for in the manual. The warranty is valid, if the product has a technical defect or fault caused by the manufacturer.

  • The warranty covers the replacement of the product or of parts with manufacturing defects.
  • The warranty period is 5 years from the date of purchase.
  • NOTICE: The warranty is based on the presentation of the purchase receipt/invoice. The right to submit a claim is valid on the condition that the product has been used only for the intended purpose and conditions.

Warranty terms:

  • NOTICE: The warranty does not extend to heating elements of the electric heaters, these are considered expendable parts.
  • The warranty does not cover the defects caused by normal wear and tear of the product.
  • The warranty does not apply to heater stones.

Warranty does not cover the defects which are caused by:

  • Transport and other accidental damage to the product;
  • Careless or improper storage and use of the product and overloading;
  • Failure to comply with the instructions for installation and operation of the product and safety requirements.

Warranty does not apply:

  • If the product has been repaired by an unauthorized person, if non-approved parts have been added to the product, or if consumables not accepted by the manufacturer have been used (e.g. heating elements);
  • If the set of product is not complete.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 58939439242

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4.5 ★★★★★
Based on 24 reviews
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Product Reviews
A
Verified Purchase
Amazon Customer
San Leandro, US
★★★★★ 5
Great buy
Size: Large (Pack of 1), Product Packaging: Standard Packaging
Definitely recommend. My new rescue has chewed though I can’t even tell you how many “indestructible” toys in under 10 minutes. Not this! We’ve had it a few days and she loves it. Hasn’t chewed through it at all and it literally keeps her busy for an hour at the minimum. Would buy again. Great quality for the price and made to last. Perfect for aggressive chewers.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
D
Verified Purchase
DEBI AHRENS
Pawtucket, US
★★★★★ 5
My Rottweiler tries to get the extra large broke in half treat out for hours.
Size: Large (Pack of 1), Product Packaging: Standard Packaging
This is super tough and super great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026
D
Verified Purchase
D. Styler
Charlottesville, US
★★★★★ 5
Great for Slowing Down Snack Time
Size: Large (Pack of 1), Product Packaging: Standard Packaging
My dog, an English Lab, is a voracious chewer, and destroys most toys in a matter of seconds. He also swallows most snacks without even chewing, and finishes meals in record time. It takes him about 20 minutes to get everything out of the Kong, and since I hide it somewhere on our property, he also takes several minutes to find it. He seems to really love the challenge, and it’s nice to have him take more time with a snack. I tried the Kong Easy Treat to seal the toy, but I find peanut butter works just as well (especially when frozen after being filled and sealed), and it’s cheaper and easier to use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
J
Verified Purchase
Jbo
San Leandro, US
★★★★★ 5
This product actually lives up to the title of indestructible.
Size: Large (Pack of 1), Product Packaging: Standard Packaging, Size: Large (Pack of 1), Product Packaging: Standard Packaging
This is the only toy I've had which my dog hasn't destroyed in minutes. I have had a few others that will at least last a few months, but Kong extreme has held up over the years. I like the fact that I can stuff it with treats, bits of other "indestructible" toys and seal it up with peanut butter, then pop it in the freezer to give her an extra 15 minute challenge. I have a couple so I can clean one while she's busy with the other. This size seems to be the best for a ~90lb. dog, the large end being roughly the same size as a tennis ball, which she loves as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 9, 2026
E
Verified Purchase
Eden Rose Bowling
Grantham, US
★★★★★ 4
Great product but choose a size or two up
Size: Large (Pack of 1), Product Packaging: Standard Packaging
Nice quality toy for long lasting and engaging play! One star docked for the sizing—I don't usually expect to need an xl anything for my 45lb border collie but he cant even fit his canine teeth into the large size to ease the jerky reward out in "hard" position but "easy" position he doesn't even tough the toy just grabs the jerky. Got an XL and it has been great for the jerky both easy and hard positioning. The larges I keep around for liquidy and frozen treats to keep the mess contained and they work very well for that.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 12, 2025

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