Available in four sizes to match most furnaces, these return air boxes are designed to be installed under the furnace. Some have a filter rack built in that can handle up to a 2" filter.

Specifications: 

SKU Description Prod Info Price/Units Quantity
SRABF14 14" RABF 16" HIGH W/WTHR STRIP Product_Details EA
RAB714 14" RETURN AIR BOX 7" HIGH Product_Details EA
SRABF17 17" RABF 16" HIGH W/WTHR STRIP Product_Details EA
RAB717 17" RETURN AIR BOX 7" HIGH Product_Details EA
SRABF21 21" RABF 16" HIGH W/WTHR STRIP Product_Details EA
RAB721 21" RETURN AIR BOX 7" HIGH Product_Details EA
SRABF24 24" RABF 16" HIGH W/WTHR STRIP Product_Details EA
RAB724 24" RETURN AIR BOX 7"HIGH Product_Details EA