Document jBRd7Mm97NEKXzLebe97bE5a2

Ah System Equipment R^fVeSStos Hirschman-Pohle Co., Inc. Since 1908 200 Lent Ave. . . . LeRoy, N. Y. Sales Representatives in Principal Cities Manufacturers of all types of Power and Gravity Roof Ventilators Minimum Overall Height (So Desirable for Modern One-Story School Buildings) Roof opening "A" Cowl height"C" 10' 12* 5H* 6' 16' 7' 18* 20' 24' 8' m* 11' 30' 12* 36' 14' 42* 16' The Hirschman Type "CAF" Electric ventilator shown has been designed in response to a demand for the absolute minimum in overall height above the roof line, and as standard construction uses our INSULATED DOUBLE SHELL STEEL CURB of any of the several types for any kind of roof deck. Fan and motor assembly avail able for a wide range of capacities at the lower static pressures. The companion Type "CA" gravity or pressure relief ventilator (not shown) uses the same general construction minus the fan and motor. Either type subject to numerous modifications to meet the needs of any building project. Cone rsjnovobl* ` for service ; Spring & Rubber Vibration Absorbers Our Type "LA" STATICK Power ventilator designed for efficient exhaust at either low or high static pressure, using non-overloading backward curved blade centrifugal fan, available in many sizes for almost any required capacity within reason. Note the damper housing above the top of the curb providing ready access to whatever type of damper is used. The Type "LB" STATICK Power ventilator (not shown) uses a similar construction minus the damper housing. See Sweet's Architectural, Engineering, or Industrial Construction Files. Complete data on any or all types gladly furnished on request. Air System Equipment Power Ventilators Air Intakes Muckle Manufacturing Co. 666 Belford Road Owatonna, Minn. Sales Engineering Representatives in Principal Cities MUCKLE VENTS--are ideal for moisture laden applications or corrosive condi tions. Motor is located out of the air stream, and housing is hot dipped gal vanized after fabrication for maximum protection. Capacities 254 to 10280 cfm. Units very efficient at low static pres sures. Constructed from heavy gauge steel, electrically welded. MUCKLE LO-SIL--designed for low sil houette appearance. Largest unit only 25) in. high. Capacities from 225 to 17,600 cfm. Automatic back draft damp ers built in on all models. Vibration separators are provided to eliminate vibration and hum. Totally enclosed, ball bearing motors are directly con nected to propeller. MUCKLE_ BC VENT--Centrifugal back ward curved wheel is ideal for operation where static pressures are encountered. Non-overloading, dynamically balanced wheel, directly connected to totally en closed motor. No maintenance of belts, pulleys, or bearings. Motor is out of air stream for protection. Capacities from 280 to 7650 cfm. Heavy gauge construc tion. MUCKLE BELTED VENT--offers over 100 different capacities for any specific requirement. High exhaust capacity uti lizes low fan tip speed to make unit very quiet in operation. Low in height, com pact and symmetrical design, blends well with modern architecture. Heavy duty, ball bearing motors and non-overloading backwardly curved wheels used on all units. manufacturers of power roof ventilators FOR OVER 15 YEARS SEE SWEETS ARCHITECTURAL OR INDUSTRIAL FILE, OR COMPLETE DATA FURNISHED UPON REQUEST. 1421