"Swingman" writes:


[...]

I build both wall and base units, which must be attached to a wall, with at
least an upper and lower 3/4" thick screw strip that sits flush between the
back panel and back edge of the cabinet sides.

[...]

Fastened thusly at the TOP screw strip, you can use just about any type of
screw, drywall or otherwise in the lower screw strips and the cabinet will
handle all the weight for which it was designed.

What is the use of the lower screw strip? The upper one bears the
weight, keeps the cabinit from falling. The lower would just keep it
from lifting off the wall, which it would have to do against gravity;
Most wall-hanging cabinets from furniture shops come with only the
upper mounting option...
--
Dr. Juergen Hannappel http://lisa2.physik.uni-bonn.de/~hannappe
Phone: +49 228 73 2447 FAX ... 7869
Physikalisches Institut der Uni Bonn Nussallee 12, D-53115 Bonn, Germany
CERN: Phone: +412276 76461 Fax: ..77930 Bat. 892-R-A13 CH-1211 Geneve 23