FLUSH
MODEL
For
maximum air flow, use this traditional egg-crate style with 3/8"
wide webs. The open area of the Flush Model is the size of the
opening, to which 1" wide ends and rails are added and fully
doweled to each of the web members. Frames are cut from 1-1/4"
wide stock, doweled at each corner. The frame is glued and blind-nailed
to the subfloor and the flooring fitted to it. When finishing
is complete, the vent is placed in the frame.