This document is the 15" Standard Locking Grate Assembly Nyloplast Detail. It shows illustrations with descriptions.

The side view illustrations show the 15” grate frame & 15” standard grate with ¼-20 x 1 ¾” long hex bolt zinc-plated steel. The top down view shows the grate with drill thru position and the frame drill thru thread position.

A note states that the location of locking device may vary.