Return Air Box -

Return Air Box - return air support box with filter slot AirScape extra large return air filter box with grille 5 square feet face area for a low pressure drop Specifications: return air support box with filter slot Buy Alpine SBFD30-100-244 30 Inch Wide Return Air Support Box and Plenum Kit With Filter Slot Alpine technical support information, product brochures and

return air support box with filter slot support* the box may be providing to the air handler itself I don't know what's inside the box to hold up the air handler, or

return of the dead slot Return Policy: NZXT Return Policy A: Hi Keean, Unfortunately, there is no support for 120mm fans in the bottom of the case, only 140mm support  Plenums & Return Air Boots · 20X10SD BOOT SLIPDRIVE CUSTOM Buffalo Boot 10x20 Side Filter Slot -Use 20x20x1 Filter · 20X20 FF Filter Frame