These purpose designed return air filter boxes are designed to fit the Toshiba RM.SDT range.
Plenums are supplied with a filter installation frame that screws to the back of the unit. This allows removal of the filter by both side withdrawal or by quick release of the plenum box. NOTE: This return air plenum box is supplied 55mm wider than the fan coil unit with a blanking plate at one end.
Use the drop down velocity calculator to select the number and size of spigots required for your air conditioning installation
