This document is the 8" Dome Locking Grate Assembly Nyloplast Detail. It shows the illustrations with descriptions.

The side view illustration shows the Dome Locking Grate with descriptions for ¼-20 x 4 ½” long hex bolt zinc-plated steel, and drill hole thru 2 places. The top down views show drill hole, 8” dome grate, 8” ductile iron grate lock bar and ¼-20 x 4 ½” long socket head cap screws (allen head) black steel in 2 places.