Pentair CH - Manual (Page 16)

P/N 472128 Rev. C 1-22-04
16
SHEET
METAL
BLOCKS HOLLOW MASONARY BLOCKS, NOT LESS THAN
4" THICK (LAID WITH ENDS UNSEALED AND JOINTS
MATCHED FOR AIR CIRCULATION). COVER BLOCKS
WITH 24 GA. (MIN.) GALVANIZED SHEET METAL.
HIG H P ER FO RM AN CE HE ATE R
6" Min.
6
" M
in
.
TM
BASE FOR USE ON
COMBUSTIBLE FLOORS
H O T