Specification Sheet

107
MODELS SDBD & SDB
DIRECT DRIVE & BELT DRIVE CENTRIFUGAL DOWNBLAST ROOF EXHAUSTERS
CONSTRUCTION/SPECIFICATION CHECKLIST
Housing
• Curb cap has integral deep spun inlet for efcient performance and prepunched mounting holes for ease
of installation.
• Spun aluminum hood and skirt for weather protection and attractive appearance.
• Heavy-gauge motor support for rigidity and strength.
• Neoprene isolators for reduction of vibration and sound.
• Quick-Release latches on motor cover for easy access to motor compartment.
• Conduit passage for easy electrical connection from below roof.
• Aluminum birdscreen is standard.
• Stainless steel fasteners on exterior.
Centrifugal Wheel
• All aluminum wheel.
• Backward-inclined for efciency at higher static pressure.
• Non-overloading for safe operation in ducted systems.
• Curved blades for efciency and quiet operation.
• Dynamically balanced for smooth operation.
Speed Controllable Motors
• Brands are nationally recognized and locally serviced.
• Motors are single speed, speed controllable and drip-proof.
• All motors are rated for continuous duty.
• Disconnect is standard.
• Motors ship mounted as standard.
AMCA Seal
• Assures rating of Air and Sound performance.
UL Label
• UL 705 Listing assures electrical reliability.
• UL 705 must be specied when required.
MODELS SDBD
DIRECT DRIVE CENTRIFUGAL DOWNBLAST ROOF EXHAUSTER