23 50 11 Heat Generation 23 52 10 Boilers 23 81 50 Terminal Heat Transfer Units 23 57 00 Heat Exchangers for HVAC 23 22 00 Steam and Condensate Piping and Pumps 23 55 00 Fuel-Fired Heaters 23 00 00 Heating, Ventilating and Air Conditioning (HVAC) 23 20 01 Pumps 23 21 16 Hydronic Specialties 09 29 05 Lead Lined Gypsum
Trade Names : Infloor Heating, Armstrong Pumps, Raypak Boilers, Modine Heaters, Rupp Make-Up, Sterling Specialties, Vibration Mountings, Caleffi, Smiths Environmental Products, Detroit Radiant Products