These purpose designed return air filter boxes are designed to fit the Mitsubishi Heavy industries FDUM100 and FDUM140VF1 standard above ceiling ducted units.
These plenums are supplied with two filter installation frames that screws to the back of the fan coil unit after the air inlet plate has been removed. Note that sealing of the two filter frames will be required on site.
This price includes a Mitsubishi PEFY air filter supplied with the plenum box.
