Acorn International #9 x 1-1/2 In. Light Gray Washered Framing Screw (250 Ct.) grills Each column has a 4-inch

Each column has a 4-inch adjustment range

open or closed

Heavy-duty steel construction

6A (ampere) thermally protected motor with built-in automatic cut-off

Acorn International #9 x 1-1/2 In. Light Gray Washered Framing Screw (250 Ct.) grills Each column has a 4-inchMetal to wood screws are self piercing, sealing tapping screws made from heat treated C1022 steel; case hardened for roofing and siding applications. Features a 1 4" across flat high hat hex washer head with assembled EPDM (Ethylene Propylene Diene Monomer) washer, offers easy driving and conforms to the metal surface for a secure and long lasting seal. The twin lead type 17 point, and hi lo threads offer faster drive time and greater resistance to