5DDD Series 12" Roof Mount Direct Drive Downblast Fan

Direct-drive downblast ventilators are designed for use where steady exhaust ventilation is needed under low to moderate static pressure conditions. Agency Listing All ventilators are UL Standard 705 listed Ventilators are CSA listed according to Standard C22.2 No. 113-M1984 (Fans & Ventilators) Features and Specifications Downblast discharge design exhausts foul air from industrial and commercial buildings Ventilators can be mounted on the roof or wall Durable spun aluminum construction with steel support braces Backward inclined aluminum fan wheel Externally cooled motor compartment Motor located out of discharge airstream Motors are 115V or 115/230V, 60 Hz, ball bearing motors with Class B insulation PSC motors included in standard design (shaded pole motor style used for 8" models) One-piece removable exhaust hood Inlet temperatures up to 170°F Built-in bird screen to protect discharge and ensure safe, obstruction-free operation Motor and wheel are easily detachable without removing ventilator from curb Junction box mounted in motor compartment Windband rolled bead for added strength and easy maneuverability Welded curb cap corners eliminate water entry into ducts or building All units are speed controllable Accessories (available separately) For more information, see Power Roof Ventilator Accessories Speed controllers Backdraft dampers NEMA 1, NEMA 3R and NEMA 4 disconnect switches Fixed mounting curbs