12" x 24" Pleated MERV 8 Filter for HVAC Return Filter Grille [Actual Dimensions: 11.75 X 23.75] 3-Pack Material_Steel The permanently attached eight-tumbler lock

The permanently attached eight-tumbler lock with a supplied key adds an extra layer of security

High Quality –High quality solid stamped steel with counter-sunk screw holes (screws included) and no sharp edges

75"H – fits a 18" X 4" duct opening

Design – removable frame for easy filter change & cleaning - uses a 1" thick filter

12" x 24" Pleated MERV 8 Filter for HVAC Return Filter Grille [Actual Dimensions: 11.75 X 23.75] 3-Pack Material_Steel The permanently attached eight-tumbler lock+ Product Details Size 12"w X 24"h pleated MERV 8 filter for HVAC return filter grille 3 Pack. Actual dimensions: 11. 75" X 23. 75" High Quality A uniquie combination of cotton & synthetic fibers gives you the most filtration and the least air resistance equals great air & easy airflow for your system Design The "W" shaped pleats give you more filter surface thereby capturing more dust. Our metal and paper diagonal support bars ensure the filter can