14" X 14" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 16 5/8" X 16 5/8"] Compatible With Duct 8in Tamper-Proof Security – Features a

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

Do not measure the overall size of the register itself

heat pump and centralized air ducted units

+ Product Details Size – 14"w X 10"h is the size for the duct opening measurement only

14" X 14" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 16 5/8" X 16 5/8"] Compatible With Duct 8in Tamper-Proof Security – Features a+ Product Details Size 14"w X 14"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 16 5 8" width X 16 5 8" height Actual Filter Size 13 3 4"w x 13 3 4" x 1" High Quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location Sidewall and ceiling Design Removable door face for easy filter change & cleaning uses a 1" thick filter.