Specification Sheet

372
cULus Standard 705
(Optional)
Listed Power Roof
Ventilator assures
electrical reliability.
Windband
Heavy-gauge galvanized
steel.
Drives (belt drive)
Adjustable pitch through 3
HP, all are sized for minimum
150% of drive HP.
Factory Run & Tested
For quality assurance and
dependable operation.
Propeller
Adjustable pitch aluminum
air-foil blades standard, steel
blades available when required.
Bearings (belt drive)
Cast iron pillow blocks, double
sealed and prelubricated,
designed for 200,000 hour life.
(Not shown)
Panel Assembly
All-welded heavy-gauge
galvanized steel construction
complete with spun venturi for
maximum efciency.
Rain Channel
Galvanized steel channel
drains water to roof.
Slide Base (belt drive)
Tension rods for easy belt
adjustment. (Not shown)
AMCA Seal
Assures certied rating of
air and sound performance
Damper Bearings
Galvanized damper shaft
rotates in bronze bushing.
Buttery Dampers
Available in aluminum, steel
or translucent berglass.
Curb Cap
Complete with welded
corners and prepunched
mounting holes
Motor
Open drip-proof standard, many
options available.
Lifting Lugs
Provide for safe,
easy placement
on roof.
Disconnect Switch (optional)
For positive electrical shutoff
and safety when servicing fans.
Extended Grease Lines and
Fittings (optional)
Allow for easy relubrication
from exterior of unit.
Standard 705
(optional)
Excludes UBX
CONSTRUCTION FEATURES AND OPTIONS
MODELS UBB & UBX
UPBLAST PROPELLER ROOF EXHAUSTERS