Dorex 9500 FR4 28 Heavy-Duty Exit Device – 4’0” – Fire Rated – Aluminum Powder Coated9500 FR4 28 Architectural quality Grade 1 fire rated exit device for heavy duty commercial applications High quality aluminum powder coated finish Modern push pad style Suitable for hollow metal and wood doors Compatible with all 9500 Series knob and lever trims Field sizeable for doors 30 40 Stainless steel latchbolt with 3 4 throw Stainless steel springs Conforms to ANSI BHMA A156. 3, Grade 1 UL and cUL listed for Panic Hardware and for Fire Exit