34" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 36 5/8" X 20 5/8"] Color_White Horizontal blades in the front

Horizontal blades in the front

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

Actual Filter Size – 33 3/4"w x 5 3/4" x 1"

+ Product Details Size – 10"w X 4"h is the size for the duct opening measurement only

Tamper-Proof Locking Mechanism – Includes an eight-tumbler lock with a supplied key to prevent unauthorized access

34" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 36 5/8" X 20 5/8"] Color_White Horizontal blades in the front+ Product Details Size 34"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 36 5 8" width X 20 5 8" height Actual Filter Size 33 3 4"w x 17 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.