Grip-Rite #8 x 2 In. Premium-Coated Combo Wood Exterior Screw (25 Lb. Pail) Gold Class HEPA filter should be changed

HEPA filter should be changed every 12 months and pre-filter should be changed every 3 months

Weather resistant - will not rust

Chemical resistant seals and gaskets provide long life from harsh chemicals and cleaners

and Air Watts tested to ASTM standard at the end of included hose

Grip-Rite #8 x 2 In. Premium-Coated Combo Wood Exterior Screw (25 Lb. Pail) Gold Class HEPA filter should be changedDec Smart galvanized base with coated finish. Countersinking bugle head. Combination drive coarse thread screws with high corrosion resistant, long life coating. Packaged in a 25 lb. plastic pail. The screw color is similar to the color of treated wood. Compliant for treated lumber. Type 17 drill tip drives into wood without pre drilling. Thread pattern reduces wood splitting and friction.