Apparatus for a fire-rated duct
Companion duct flanges
Corner piece-less duct, method of producing the same, and...
Corner profile for coupling channel members
Coupling ring for ventilation ducts, and method of...
Duct jointing system
Duct reinforcement
Duct system and method
HVAC duct system
HVAC duct system
Integral transverse flanges for a duct connecting system
Methods and devices for joining panels
Pipe lap joint and methods
Pipe lap joint with bridged slot
Protective cylinder for pipe covering material
Sealing mechanism for ductwork
Self-sealing collar for use in heating and air conditioning...
Spin forming a tubular workpiece to form a radial flange on...