Burst panel block off plate is made from .375" alum. that has a 2.00" x 1.00" hole for the air to escape out of in the event of a blower backfire. Back fire valve measures 4.375" x 1.375" with recessed pockets for the return springs to fit into and is made from .500" billet alum. Backfire valve assm. includes cad plated return springs, mounting bolts, gasket and alum. spring retaining washers. Plate includes twenty four cad plated countersunk bolts for mounting the plate.
Includes detailed installation instructions.