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IN-LINE CENTRIFUGAL FANS




Model SQDA

Direct Drive Centrifugal In-Line Duct Fan

Licensed for Sound & Air Performance
UL Listed for Standard 705 (most models)
Motor out of the airstream
Non-overloading backward inclined aluminum wheel
Galvanized outer skin with 3 removable panels for access
Rigid internal cross-bracing

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Model SQBA

Belt Drive Centrifugal In-Line Duct Fan

Licensed for Sound & Air Performance
UL Listed for Standard 705 (most models)
Motor out of the airstream
Non-overloading backward inclined aluminum wheel
Galvanized outer skin with 3 removable panels for access
Rigid internal cross-bracing
Heavy duty pillow block bearings
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