CORNER GUSSET, LEFT HAND TYPE; ASTM A1018/A653/B633 STEEL MATERIAL; 3-15/16 INCH L X 1-7/8 INCH W X 3-1/2 INCH H SIZE; ZINC ELECTROPLATED FINISH; 1-5/8 INCH CHANNEL WIDTH; ISO 9001 APPLICABLE STANDARD; 7/32 INCH THICKNESS