Acme Engineering - For over 60 years Acme Engineering & Manufacturing Corporation has grown to become a world leader in the design, manufacture and distribution of fans, blowers and ventilation equipment.

 Acutherm - Manufacturer of variable volume ceiling diffusers with self-contained thermostats and actuators.

 DuctSox Fabric Air Dispersion Products - Manufacturer of fabric air dispersion systems, used to distribute and disperse air in open ceiling architectures.

 Manufacturer of sound attenuators and acoustical products.

 FanAM - Manufacturer of specialty fans including, Roof Exhausters, Wall Exhausters, Inline Tube Fans, Centrifugal Blowers, Utility Fans, Dual Inlet Blowers, Motorized Impellers, Dampers, Supply/Exhaust Grilles, & Accessories.

 KEES, INC. - Manufacturer of all types of kitchen hoods, dishwasher hoods, supply fans, specialty items, direct and indirect gas fired heaters, security grilles, burglar bars, louvers, & all types of access doors.

 Krueger - Manufacturer of grilles, registers, diffusers, and VAV terminal units for commercial and industrial applications.

 Markel Products Company - Manufacturer of heating, ventilation, lighting & temperature control products.

 Mars Air Systems - Manufacturer of a wide range of air curtains, air doors, and make up air systems for cooling and heating.

 Metal-Fab - Manufacturer of no-chase grease duct systems, fume and vapor ducts and boiler venting products.

 Monoxivent Source Capture Systems - Manufacturer of underground and overhead auto exhaust, welding arms and high temperature hose.

 Norlock Metal Products - Spiral duct and fittings, round, oval, single wall, double wall, galvanized, paintable, aluminum and stainless steel.

 PennBarry - Fans, blowers and ventilation equipment.

 Pottorff - Manufacturer of fire and fire/smoke dampers, low leakage outside air dampers, louvers, control dampers, sound attenuators, sound enclosures, acoustical louvers and baffles.

 Semco Acoustic Products - Manufacturer of sound attenuating products, including rectangular & round silencers, Media Free silencers, custom silencers, and acoustic enclosure panels.

 TOXALERT - Manufacturer of gas sensors, controllers, air quality and hazardous gas monitoring equipment for HVAC and other industries.

 Vent-A-Kiln - Manufacturer of variable-height, suspended exhaust systems designed for the removal of kiln firing emissions.

 Vent Products - Manufacturer of custom dampers, vents, and louvers

 Vibration Eliminator Co. - Manufacturer of a wide range of spring and rubber-in-shear mounts for the control of vibration, shock and noise in the HVAC, Marine and Industrial fields.

 Young Regulator - Manufacturer of dampers, heating & air conditioning regulators.

 ZOO Fans - Destratification fans.