Panamex Group, Inc.
Panasonic Ecology Systems (Thailand) Co., Ltd.
Paragon Controls, Inc.
Peerless Electric/Madison Manufacturing Company
PennBarry
Perfect Air Control, Inc.
Phelps Fan Inc.
Phoenix Manufacturing, Inc.
Plasticair Inc.
Plymovent Corporation
Pottorff
Powered Aire, Inc.
Quietaire Corporation
Rapid Fan and Blower Inc.
Reliable Products
Reversomatic Heating and Manufacturing Limited
Robinson Industries, Inc.
Ruck-Ventilatoren GmbH
Rupp Air Management Systems
Ruskin Company
Safe-Air of Illinois, Inc.
Sangmi Air Tech
Saudi Fan Industries
Shanghai Kruger Ventilation Co., Ltd.
Sheldons Engineering Inc.
Soler & Palau S.A.
Soler & Palau USA
Soler & Palau, S.A. de C.V.
Strobic Air Corporation
Super Vacuum Manufacturing Company, Inc.
Surjin Air Conditioning Company, Ltd.
Swartwout Division
Systemair AB
T.A. Morrison & Co., Inc.
TC Axial, A Twin City Fan Company
TC Ventco, A Twin City Fan Company
Temtrol, Inc.
Thermotek
TLT-Babcock, Inc.
TLT-Covent Fans, Inc.
Tomkins Industries, Inc.
Trane Company, The
Twin City Fan Companies, Ltd.
Twin City Nicotra LLC
U.S. Fan International
Ultratech Industries, Inc.
United Enertech Corp.
United Metal Products
Universal Fan & Blower Ltd.
Vanaire
Venco Products
Vent Products Co., Inc.
Vent-Axia Ltd.
Ventex, Inc.
Ventrol Air Handling Systems Inc.
Viron International
Vortice Elettrosociali S.p.A.
Ward Industries
Western Ventilation Products Ltd.
Windy City Manufacturing
Winfan Technology Co., Ltd.
Wishing Star Limited
Witt & Sohn AG
Wonder Metals Corporation
York, a Johnson Controls Company
Zhejiang Yilida Ventilator Co., Ltd.
Zitron, S.A.