Furnace Filter, Pre-Pleat 40, 20 x 25 x 4-In. Countersink Bits Use this knob on standard

Use this knob on standard 1-3/8-inch and 1-3/4-inch thick doors

Milwaukee® OPEN-LOK™ 1-3/8" TITANIUM ENHANCED CARBIDE TEETH METAL BLADE 1PK(49-25-1501)

Plated Steel ferrule

thermoplastic shell shields against environmental extremes

virus carriers

Furnace Filter, Pre-Pleat 40, 20 x 25 x 4-In. Countersink Bits Use this knob on standard20" x 25" x 4", pre pleat 40 air filter, 100% synthetic, high dust holding capacity & low pressure drop, 2 piece heavy duty die cut frame, expanded metal backing & diagonal grid supports for maximum strength, merv rating 8, 90 day filter, effective against pollen, dust lint, dust mites, pet dander, mold, bacteria, virus carriers.