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POWER ROOF VENTILATORS




Model CRDA

Direct Drive Domed Centrifugal Power Roof Ventilators

Licensed for Sound & Air Performance
UL Listed for Standard 705 (most models)
Force ventilated motor compartment
Non-overloading backward inclined aluminum wheel
Weatherproof spun aluminum housing

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Model CRBCA

Belt Drive Domed Centrifugal Power Roof Ventilators

Licensed for Sound & Air Performance
UL Listed for Standard 705 (most models)
Force ventilated motor compartment isolated from airstream
Non-overloading backward inclined aluminum wheel
Weatherproof spun aluminum housing
Vibration isolators on drive frame
Galvanized wire mesh birdscreen
“C-Drive” unique bearing and shaft assembly
L10 life exceeding 1,000,000 hours
Variable pitch motor pulley

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Air Distribution




STEEL LOUVERED DIFFUSERS
Louvered-Face Diffusers
Steel Perforated Supply Diffusers & Ceiling Returns
Perforated-Face Diffusers
Aluminum Registers and Grilles
Registers & Grilles
STEEL LOUVERED DIFFUSERS
STEEL LOUVERED DIFFUSERS
Steel Perforated Supply Diffusers & Ceiling Returns
Steel Perforated Supply Diffusers & Ceiling Returns
Aluminum Registers and Grilles
Aluminum Registers and Grilles



















Mission Statement

“Work Together as a team to provide our customers with quality products and services at competitive prices.
Provide each employee with challenging career growth opportunity and financial achievement.
Treat each other, customers, and suppliers with dignity and respect.”


David Allen Company won 5 of the 16 National Terrazzo and Mosaic Association (NTMA) Honor Awards for 2017

“From a design architect’s perspective, we were very pleased with the overall craftsmanship and quality of the poured terrazzo floors by David Allen Company at the Ronald Reagan Washington National Airport. Even though the scope of the floor finish was extensive and the pattern complex, David Allen Company was quite successful in fulfilling our design intentions.”Mark Shoemaker, Principal
Pelli Clark Pelli Architects, New Haven, Connecticut