75309421
Jun 16, 1997
Jul 27, 1999
roof curbs, expansion joint curbs, equipment support curbs, wall curbs, roof hatches, roof screens, piping curbs, roof doors and pipe hangers, all (primarily) made of metal; metal adapters for mounting heating, ventilation and air conditioning equipment
Metal Goodsroof curbs, expansion joint curbs, equipment support curbs, wall curbs, roof hatches, roof screens, piping curbs, roof doors and pipe hangers, all made of (primarily) non-metal materials; non-metal adapters for mounting heating, ventilation and air conditioning equipment; skylights
Nonmetallic Building Materialsmanufacture of roof curbs, expansion joint curbs, equipment support curbs, wall curbs, roof hatches, skylights, roof screens, piping curbs, roof doors, diffusers, HVAC adapters and pipe hangers to the order and specification of others
Treatment of Materials