This cover is from a Sargent model 9900Mortise Lock Exit Device
32D Satin stainless steel Left Hand Reverse “LHR” it is from a used unit and is in very good condition , Has no dents, only very minor scratches. This is the cover only does not include any other parts, 8 1/4"Lx2 5/8"W x 2"H stck#(1271)A9,B2