The SEC-9 Round Hole Perforated Face Maximum Security Grille is constructed of materials ranging from 14-gauge to 3/16″ steel, aluminum and stainless steel.
Security grilles are perforated with staggered 5/16″ diameter holes on 7/16″ centers.
Grilles can be furnished in round, square and rectangular faces, and can be supplied as face only or with sleeves in various depths to accomodate wall and ceiling constructions.
Security bars, woven wire mesh, deflection grilles, opposed blade dampers and back-up angles can be added based on application specifications.
Factory primed in gray or white.