This document is the 12" Bronze Locking Grate Assembly Nyloplast Detail. It shows illustrations with descriptions.

The side view illustrations show the 12” grate frame & 12” Bronze grate with ¼-20 x 1 ¾” long hex bolt brass in 2 places. 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.