14" X 24" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 16 5/8" X 26 5/8"] w30h30 These are built heavy duty

These are built heavy duty for installation into brick and cement walls

actual front end outer dimensions are approximately 30 5/8" width X 36 5/8" height

expanding or retracting the gap to meet your precise needs

Design – Full Control Vertical/Horizontal Air flow Direction

+ Product Description Protect and secure your thermostat with this high-quality Clear Plastic Thermostat Guard

14" X 24" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 16 5/8" X 26 5/8"] w30h30 These are built heavy duty+ Product Details Size 14"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 16 5 8" width X 26 5 8" height Actual Filter Size 13 3 4"w x 23 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.