150mm (6") - Heat Retention Cartridge

The heat retention cartridge fits within the ducting vent or round ducting tube as illustrated below.

External Vents to suite this product

An extractor air solution and optimum heat protection are no contradiction - when you have a heat retention cartridge The idea of using air as an insulating medium, is as simple as it is ingenious. You can also retrofit this purely mechanical back pressure shutter solution.

It is commonly known that extracted air is better than recirculated air, but one shortcoming of many extractor air solutions is the wall conduct or wall vent – the component that guides the exhaust air through the house wall. Old or simple new models provide insufficient protection against heat loss and on cold or windy days, valuable heat energy is lost through this leak, especially when the cooker hood is not in use.

If your house is prone to windy conditions, then this unit will put an end to noisy flapping outside vents, thus also preventing the cold air returning back into your kitchen too.

The multi-award-winning THERMOBOX® from Luxair finally puts an end to this. Its operating principle is as simple as it is ingenious: the ShutterTec retention system consists of three flaps arranged one behind the other and sealed by a magnet. When closed, these form two chambers which trap the air and since air is a poor heat conductor, the THERMOBOX® insulates up to 20 times better than normal wall vents.