Re: Short Plenum Run Question

[Lewis Gardner <lgardner@xxxxxxxxxxxxxxxxxxxxxxxxxx>]

> My current plan is just to install a firestop between the cables and
> the plenum or duct or whatever it is.  Since the cables are actually
> below the grate, I can toenail some 14 1/2" blocks across the gaps and
> block the area with the cables from the area where I want cold air to
> circulate.

Grate solution, then the wires are no longer in the duct, plenum,
airspace or what ever else it could be called! If sheet metal is easier
for you to work with you could use that to put a "floor" in the return.