A flange to be assembled to a duct member includes a plurality of pre-fabricated apertures or areas of weakened wall strength for receiving fasteners to assemble the flange to the end of a duct member. The apertures may be spaced apart such that the fasteners can be inserted at regular intervals along the length of the flange and the length of the end of the duct member.

A flange to be assembled to a duct member includes a plurality of pre-fabricated apertures or areas of weakened wall strength for receiving fasteners to assemble the flange to the end of a duct member. The apertures may be spaced apart such that the fasteners can be inserted at regular intervals along the length of the flange and the length of the end of the duct member.

A unitary support assembly for connecting an air transport duct to a support includes a body portion, a duct connecting means integrally formed with the body portion for selectively securing the support assembly to the air transport duct, and a support connecting means integrally formed with the body portion opposite the duct connecting means for selectively securing the support assembly to the support.

A unitary support assembly for connecting an air transport duct to a support includes a body portion, a duct connecting means integrally formed with the body portion for selectively securing the support assembly to the air transport duct, and a support connecting means integrally formed with the body portion opposite the duct connecting means for selectively securing the support assembly to the support.

A combination sheet metal hammer and duct stretcher device. The device is directed to the field of heating, ventilation and air conditioning and particularly to a duct assembly tool for drawing and pinching two pieces of duct work together.

This invention provides for a sealed drive slip that may be roll-formed from sheet metal. The sealed drive slip has a gasket on the flat portion of the sheet metal and prevents air leakage between the inside and outside of the air duct.

A unitary support assembly for connecting an air transport duct to a support includes a body portion, a duct connecting means integrally formed with the body portion for selectively securing the support assembly to the air transport duct, and a support connecting means integrally formed with the body portion opposite the duct connecting means for selectively securing the support assembly to the support.

A unitary support assembly for connecting an air transport duct to a support includes a body portion, a duct connecting means integrally formed with the body portion for selectively securing the support assembly to the air transport duct, and a support connecting means integrally formed with the body portion opposite the duct connecting means for selectively securing the support assembly to the support.

A corner flange connection member configured for joining together adjacent duct channel flanges associated with duct sections includes two leg portions joined together in angular relationship by a corner portion, and at least one opening in said corner portion for receiving at least one fastening member for connecting said corner flange connection member to the duct sections. The at least one opening is shaped so as to threadably receive the fastening member without cutting threads.

A corner flange connection member configured for joining together adjacent duct channel flanges associated with duct sections includes two leg portions joined together in angular relationship by a corner portion, and at least one opening in said corner portion for receiving at least one fastening member for connecting said corner flange connection member to the duct sections. The at least one opening is shaped so as to threadably receive the fastening member without cutting threads.