Welcome to Linwood Plenums - home of the air conditioning plenum box

Linwood Plenums is a market leader in the supply of air conditioning plenum boxes. Based in the UK, we supply air conditioning, refrigeration and HVAC installers with an extensive range of FCU air plenum boxes and deliver to our customers worldwide.

Our plenum boxes are designed to suit ceiling concealed ducted fan coil units (FCU) made by the leading split system (VRF & VRV) air conditioning manufactures. These include Mitsubishi Electric, Daikin, Toshiba, Fujitsu General, Mitsubishi Heavy Industries (MHI), Samsung, LG, Midea and Hitachi.

With over 180 different products to chose from, we can supply a plenum box to suit most applications. Our advanced manufacturing techniques using both thermo-forming and CNC machining ensures that we remain the most competitively priced supplier of plenums on the market today.

All our supply air plenum boxes are insulated as standard and the majority of our plenum boxes are manufactured using re-cycled materials.

Please note that we do not supply air filters - photos are for illustration purposes only.

From the USA? Our products will fit US models by the above manufacturers. Please contact us with the model reference that you are installing and we will advise accordingly.