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HUUM UKU Ext Box

HUUM UKU Ext Box

The HUUM UKU Extension Box is a wall-mounted power extension unit designed for use with compatible HUUM UKU sauna controls. It expands the control system's power-handling capability for higher-output HUUM electric sauna heaters. The Extension Box is specified as required for HUUM sauna heaters over 12 kW, making it an essential system component for compatible high-output models such as the HIVE 15 and HIVE 18. Its compact light-grey enclosure is designed for wall-mounted installation and operates with a 240V electrical supply. Designed, engineered, and manufactured in Estonia, the UKU Extension Box is SGS listed and carries HUUM's limited residential and commercial warranties. A compatible HUUM UKU sauna control is required and sold separately.
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Key Features

For High-Output HUUM Heaters: Required for HUUM sauna heaters rated over 12 kW.

UKU Control Compatibility: Designed to operate as part of a compatible HUUM UKU sauna control system.

Power Extension Function: Expands the control system for compatible higher-output electric sauna heaters.

240V Operation: Designed for a 240V electrical supply.

Wall-Mounted Design: Compact enclosure is designed for permanent wall-mounted installation.

Light Grey Finish: Neutral enclosure finish designed for integration into the sauna's equipment area.

SGS Listed: Manufacturer identifies the UKU Extension Box as SGS listed.

Made in Estonia: Designed, engineered, and manufactured in Estonia.

Product Details

Model: UKU Ext Box

Product Type: Sauna Control Power Extension Unit

Compatibility: HUUM UKU Controls

Application: HUUM Sauna Heaters Over 12 kW

Voltage: 240V

Circuit Breaker Amperage: 2 × 63A

Installation Type: Wall-Mounted

Finish: Light Grey

Weight: 3.25 lb

Listing: SGS

Country of Manufacture: Estonia

Residential Warranty: 3-Year Limited Warranty

Commercial Warranty: 1-Year Limited Warranty

Included

  • HUUM UKU Extension Box
  • Installation and Operation Manual
  • 3-Year Limited Residential Warranty
  • 1-Year Limited Commercial Warranty

The HUUM UKU sauna control and sauna heater are not included and are sold separately.

Dimensions

Width: 7 in (178 mm)

Depth: 4 in (101 mm)

Height: 10 in (254 mm)

Overall Dimensions: 7 × 4 × 10 in (W × D × H)

Weight: 3.25 lb

Shipping & Delivery

Shipping rates are calculated based on the delivery location. Final shipping costs will be confirmed based on the destination.

Installation and Operation

UKU Ext Box Manual 2022.pdf

View full details

HUUM UKU Ext Box
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About Rodeo

At Rodeo we're on a mission to create the best saunas in the world. It all started with a simple realization - existing brands were either overpriced or cheap knock-offs.

So we built the brand we wished existed. A perfect balance of great materials, honest craftsmanship, and clean design at a fair price. We focus on what actually matters - crafting great products that hold up to real, everyday use.

We build with the belief that products should become part of your routine, not end up in a landfill. No trends. No gimmicks. Just great saunas, made the right way by people who care about their craft.

We make saunas for folks who deeply love the art of rest, recovery and relaxation after a hard days work.

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