Blocking Bar, Product Type Breaker Blocker Bar, For Use With Circuit Breakers, Color Red, For Voltage 480/600V AC, Material Fiberglass Reinforced Nylon, Overall Length 7.75 in, Overall Width 7.6 in, Resistance Properties Chemical Resistant, Standards ANSI Z244, OSHA 29 CFR 1910.147 (C) (4) (ii) (A) (1) / (c) (5) (ii) (C) (1), Package Quantity 5