Reason for 2 1 filter slots on hvac Merv 2 and 5

Return Vent Filters return air box with filter slot This reversible left or right hand return air support box is for use with systems where the return air must come in underneath the furnace or air handler return to the feature slot AirScape extra large return air filter box with grille 5 square feet face area for a low pressure drop Specifications:

return linear slot diffuser We help HVAC companies grow their heating and cooling businesses by providing them with quality top-notch products such as the return air filter box We ensure