Make Up Air

Contact Us

To speak with a sales associate, please call the location nearest you, or request information online.

Frank I. Rounds Co.
(800) 696-6440
Randolph, MA 02368
65 York Ave.
Tel. (781) 963-6440
Fax. (781) 963-2067

The MCAS, Modulating Combustion Air Supply System™ is a demand-controlled combustion or make-up air supply system designed to provide the exact amount of combustion air for mechanical room/laundry rooms. The system senses when no appliances are running and operates at a very low speed, maintaining neutral pressure in the room.

US Draft delivers pioneering technology for the chimney and venting industry by bringing the solutions necessary for safe, code compliant design while supplying low maintenance, dependable products. With revolutionary advances such as their EC Flow technology and Truline fan construction, US Draft Co is solving the challenges presented by the next generation of appliances. Options for induced draft fans, make-up air, and clothes dryer systems are all available here!