The Liebherr UBCgb 3731 Plus is a fully integrated fixed-door, under-worktop appliance with a total volume of 135 l. Designed for flexible storage of beverages and food, it features adjustable GlassLine shelves, LED ceiling lighting and a PowerCooling system with a FreshAir activated charcoal filter for consistently fresh air. With a low noise output of 34 dB(A) and intuitive LC display touch controls, it offers convenient, quiet operation in integrated kitchen or bar settings.

Key Features

Fully integrated under-worktop design – fixed-door appliance suitable for built-in installation beneath the worktop.
Total volume 135 l – provides generous capacity for storing beverages and food.
PowerCooling with FreshAir activated charcoal filter – forced air system for even cooling and effective odour neutralisation.
GlassLine shelves – separable glass shelves let you slide the front half under the back half to accommodate taller containers.
Convenient height adjustment for glass shelves – shelf heights can be adjusted quickly and individually, even with food on them.
Glass shelves with BlackSteel–look trims – transparent shelves with decorative trims for a modern, stylish interior.
LED ceiling lighting – provides clear illumination of the interior.
LC display monochrome touch electronics – digital temperature display with touch operation.
Display lock – prevents unintentional changes to the settings, and can be deactivated when needed.
Visual and acoustic door alarm – alerts you if the door is open.
Visual and acoustic malfunction alarm – provides clear notification in case of a malfunction.
Optional SmartDeviceBox interface – connectivity available via SmartDeviceBox (accessory).
Reversible door hinging (right as supplied) – door hinges can be reversed, offering installation flexibility.
Replaceable door seal – door seal can be replaced when necessary.
Low noise output of 34 dB(A) – operates quietly in everyday environments.
Energy consumption 161 kWh/year – 0.441 kWh per 24 h.

Technical Specifications

Product type	Fully integrated, fixed door / under-worktop appliance
Model designation	UBCgb 3731 Plus
Total volume	135 l ¹
Energy efficiency class	Not stated in source
Energy consumption (365 days / 24 h)	161 kWh / 0.441 kWh
Noise output	34 dB(A)
Aperture dimensions (h / w / d)	86–92 / 60 / min. 56.5 cm
Type of control	LC Display monochrom / Touch-Elektronik
Digital temperature display	Yes (digital)
Interface	SmartDeviceBox: optional accessory
Door alarm	Visual and acoustic
Malfunction alarm	Visual and acoustic
Cooling system	Forced air system – PowerCooling with FreshAir activated charcoal filter
Interior lighting	LED ceiling lighting
Shelving	GlassLine shelves; separable glass shelves; Glass shelves with BlackSteel–look decorative trims
Door hinges	Reversible door hinging, right
Door seal	Replaceable door seal
EAN	9005382260616
Regulatory note	¹ Total volume indicated in accordance with Regulation EU 2019/2016 (rounded off).

Additional Details and Usage

GlassLine shelves and flexible storage

The GlassLine shelves are designed for flexible storage. Separable glass shelves let you slide the front half under the back half, so you can place taller carafes or containers at the front while still keeping space for other items. Shelf heights can be adjusted quickly and individually, even with food stored on the shelves.

FreshAir activated charcoal filter

The FreshAir activated charcoal filter ensures consistently fresh air inside the appliance. Positioned directly in the airflow in the fan housing, it neutralises unpleasant odours as far as possible and helps maintain a pleasant environment. A convenient display reminds you when it is time to change the filter.

Display lock and controls

The LC display with touch electronics includes a display lock to prevent unintentional changes to the settings, which can be particularly useful on a beverage fridge. The display lock can be easily deactivated whenever changes are required.

Installation overview

The appliance is intended as a fully integrated under-worktop unit with a fixed door. It requires an aperture height of 86–92 cm, width of 60 cm and minimum depth of 56.5 cm. A technical drawing is provided for detailed installation planning.

Accessories

The following accessories are listed for this appliance (subject to availability; availability may vary by region):

612526500 – SmartDeviceBox
909735100 – Mains cable, Europe, Korea
909581100 – Labelling clips
774287400 – Base trim
909581000 – Side-by-Side set

Subject to availability. Please check with your local dealer for accessories available in your region. The overview represents an excerpt of the most important accessories.

Frequently Asked Questions

What type of appliance is the Liebherr UBCgb 3731 Plus?

It is a fully integrated, fixed-door under-worktop appliance designed to be built in beneath a work surface.

What is the total volume of the appliance?

The total volume is 135 l, indicated in accordance with Regulation EU 2019/2016 and rounded to the nearest integer.

How does the FreshAir activated charcoal filter work?

The FreshAir activated charcoal filter is located directly in the airflow in the fan housing. It neutralises unpleasant odours as far as possible, ensuring consistently fresh air inside. The display reminds you when the filter needs to be replaced.

Can the glass shelves be adjusted for tall bottles or containers?

Yes. The separable glass shelves allow the front half to slide under the back half so taller containers can be placed at the front. The height of the glass shelves can also be adjusted quickly and individually, even when food is already on them.

Is the door hinging reversible?

Yes. The appliance is supplied with right-hand door hinging, and the door hinges are reversible to suit different installation requirements.

Does the appliance offer a door alarm?

Yes. It has a visual and acoustic door alarm, as well as a visual and acoustic alarm in case of malfunction.

UBCGB3731

Liebherr Plus UBCgb3731 Drinks Fridge