Backer-On Rock-On #9 x 2-1/4 In. Star Drive Cement Board Screws (100 Ct.) Southwire Features 3 settings and an

Features 3 settings and an oscillation function for convenience and ultimate air flow

Adjustable drum trap cover fits 3-1/4" to 4" drum traps

Inhibits bacterial odor

25” Thick

Backer-On Rock-On #9 x 2-1/4 In. Star Drive Cement Board Screws (100 Ct.) Southwire Features 3 settings and anBacker On Rock On Cement Board Screws are designed for attaching HardieBacker or equivalent fiber cement backerboard to wood or light gauge steel studs. The patented serrated head design countersinks for flush seating at any angle, providing a smooth surface for tile. Backer On Rock On cement board screws comply with ANSI standards for cement board installation as specified by cement board manufacturers. Backer On Rock On screws can be installed with