Why even use a Mounting board?

A mounting board is used to adapt a differently sized mechanism than original to the bottom of a chair seat.

We recommend that when drilling the 4 holes in the board to use a drill bit 3/16" or 1/4" larger than the bolt being used...and please use a washer.

The board is attached to the original mounting holes using the same or longer fasteners. The new mechanism is then wood screwed to the board with supplied #14 x 1" phillips head mounting screws.

The mechanism may be moved forward or back on the board without making more holes in the seat bottom. Why move?

Plycraft user notes

Plycraft Lounge chair users should install the board as far rearward as possible

The mounting board need not be removed after installation but can permanently remain.

The mounting board if not removed, usually cannot be noticed, or paint the edges Black.