Oval register boot, pipe, elbow, and connector for HVAC

A method for installing duct work within a building, the method comprising:

• providing a system for air handling, the system comprising an oval pipe comprised of plastic having an oval cross-section and a register boot, wherein the register boot is comprised of plastic having a main body with a first opening and a second opening wherein the first opening has an oval cross-section for connection with the oval pipe and wherein the second opening is generally rectangular for fitting a register cover, the main body further comprising a first oval portion at the first opening sized to fit over an end of the oval pipe, a second oval portion extending outwardly from the first oval portion to a rear wall of a box having an opposite front wall and first and second opposite side walls, the register boot further comprising a first tab extending orthogonally outward from the first side wall, a second tab extending orthogonally outward from the second side wall, and a third tab extending orthogonally outward from the front wall, wherein the first tab has a length less than the first side wall and is centered along the first side wall, wherein the second tab has a length less than the second side wall and is centered along the second side wall, and wherein the third tab has a length less than the third side wall and is centered along the third side wall, wherein the second oval portion defines an opening in the rear wall of the box, the opening in the rear wall of the box centered within the rear wall of the box, with a length of the rear wall longer than a major diameter of the opening in the rear wall of the box and with a width of the rear wall longer than a minor diameter of the opening within the rear wall of the box, the opening in the rear wall of the box centered in the rear wall of the box;
• connecting the oval pipe with the register boot by positioning the first oval portion of the register boot over an end of the oval pipe;
• positioning the oval pipe in between framing members extending vertically along a wall of the building;
• and securing the register boot to the wall such that the first tab, the second tab, and the third tab of the register boot fit against the wall.

A system for air handling, the system comprising:

• an oval pipe comprised of plastic having an oval cross-section with a major axis of 6 inches and a minor axis of 3 inches,
• a register boot comprised of plastic having a main body with a first opening and a second opening wherein the first opening has an oval cross-section for connection with the oval pipe and wherein the second opening is generally rectangular for fitting a register cover, the main body further comprising a first oval portion at the first opening sized to fit over an end of the oval pipe, a second oval portion extending outwardly from the first oval portion to a rear wall of a box having an opposite front wall and first and second opposite side walls, the register boot further comprising a first tab extending orthogonally outward from the first side wall, a second tab extending orthogonally outward from the second side wall, and a third tab extending orthogonally outward from the front wall, wherein the first tab has a length less than the first side wall and is centered along the first side wall, wherein the second tab has a length less than the second side wall and is centered along the second side wall, and wherein the third tab has a length less than the third side wall and is centered along the third side wall, wherein the second oval portion defines an opening in the rear wall of the box, the opening in the rear wall of the box centered within the rear wall of the box, with a length of the rearwall longer than a major diameter of the opening in the rear wall of the box and with a width of the rear wall longer than a minor diameter of the opening within the rear wall of the box, the opening in the rear wall of the box centered in the rear wall of the box;
• a heating or cooling source configured for suppling heated or cooled air to the oval pipe and fluidly connected to the oval pipe.