I have about 6 metal cabinets, vaguely similar to that which houses
a Heathkit impedance bridge. About 7 inches tall, 7 inches deep
on the bottom, 5 inches on the top, sloped front from the top to a
point 2 inches from the bottom, then straight vertical down to the
bottom. Vent holes on the sides and back, access rectangular hole
in the bottom of the back.

Attempt at ASCII diagram, side view:
_____
| \
| \
|_____|

Various widths from 7 to about 15 inches.

I don't have a use, and need to get rid of some stuff.
Looks too good to toss, so they're yours for the cost
of postage, from Oradell NJ 07649.