32" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Powder-Coat Installation of the vents will actual front end outer LS 1438 12BTP 15 Width_8in

Installation of the vents will eliminate the need to raise the door ensuring security and constant air flow and reduced heat transfer into attics and adjacent house walls

75" Width X 21

+ Product Details Size - 30"w X 4"h is the size for the duct opening measurement only

Contorl Lever To Adjust Louvers According To Season - Complete Open For Summer To Release The Heat

rust-resistant aluminum

32" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Powder Coat Installation of the vents will actual front end outer LS 1438 12BTP 15 Width_8in Installation of the vents will eliminate the need to raise the door ensuring security and constant air flow and reduced heat transfer into attics and adjacent house walls 75" Width X 21