(Wall-Mount Exhaust Fan)
Unmatched rigidity A in/out, B up/down, and C side to side
D High-strength, 1-1/2" square tubing thicker-walled 11 ga. 70% more rigid than comparable formed-angle, channel or round-tube mounts
E Sturdy, 4-wing blade eliminates "helicopter" sound produced by 3-wing blades.
Less noise = less animal stress."
F Thicker, reinforced, all-welded fan-blade hub (not 'stamped' steel)
G Tube-mount set back 6" from blade...to maximize quietness
H Thicker 12 ga, oversize motor/bearing plate...with formed-angle lip for added strength...heaviest on market. Welded (not bolted) to tube mount.
I Deep-drawn, 14 ga venturi for better air flow
J Tube mount is bolted to venturi with eight-3/8" bolts (grade 5) and nylon-insert lock nuts
K Heaviest fan on market 48" cone fan weighs 355 lbs.
L Matched 'Browning' cast-iron pulleys