32" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Powder-Coat If your duct opening is RFG1820AL Height_32in We have the largest

If your duct opening is 14 inches in diameter

actual front end outer dimensions are approximately 26 5/8" width X 38 5/8" height

Tamper-Proof Security – Features a robust design to prevent unauthorized access and protect your thermostat settings

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

32" x 8" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Powder Coat If your duct opening is RFG1820AL Height_32in We have the largest If your duct opening is 14 inches in diameter actual front end outer dimensions are approximately 26 5 8" width X 38 5 8" height