Abstract: A coupler includes a tubular wall having a flange end and a free end, an annular flange extending radially outwardly from the flange end, and a plurality of retaining barbs extending outwardly from the free end. A plurality of latch assemblies are at the flange end. The latch assemblies are configured to releasably secure the flange to an adjacent member. Each of the latch assemblies comprises an inner latch pivotally attached to an outer latch. The outer latch is engageable with the flange of the coupler and the inner latch is engageable with a flange on an adjacent component.

Abstract: A collar for connecting ducting components is provided. The collar includes a tubular wall having a line end and a free end, an annular flange extending radially outwardly from the line end, and a plurality of retaining tabs extending outwardly from the free end. A plurality of locking members are provided at the line end. The locking members are configured to releasably secure the flange to an adjacent member.

Abstract: A collar for connecting ducting components is provided. The collar includes a tubular wall having a line end and a free end, an annular flange extending radially outwardly from the line end, and a plurality of retaining tabs extending outwardly from the free end. A plurality of locking members are provided at the line end. The locking members are configured to releasably secure the flange to an adjacent member.

Abstract: A stabilizer component comprising a unitary body including a central flange, a plurality of first and second retention stanchions. The central flange defines a through-hole from a first end portion to a second end portion of the stabilizer component, and includes an inner circumference and an outer circumference. Each first retention stanchion, of the plurality of first retention stanchions, (i) extends orthogonally and outwardly from the outer circumference of the central flange in a first direction, and (ii) is configured to be inserted into a respective receiving slot of a first HVAC connecting component. Each second retention stanchion, of the plurality of second retention stanchions, (i) extends orthogonally and outwardly from the outer circumference of the central flange in a second direction, said second direction being opposite said first direction, and (ii) is configured to be inserted into a respective receiving slot of a second HVAC connecting component.

Abstract: A duct system with multiple flex duct sections includes a duct take off, a duct register boot, at least one flexible duct assembly that includes an inlet coupler, an outlet coupler, and a duct section. The inlet coupler and outlet coupler are terminally connected to the duct section completing the flexible duct assembly as the number of duct assemblies determines the length of the duct system. The duct takeoff is mounted to the inlet coupler, and the duct register boot is mounted to the outlet coupler as the duct takeoff is in fluid communication with the duct register boot through the flexible duct assembly. Additionally, an air controlling device can be mounted with respect to three different places, wherein the three different places are in between two couplers, the coupler and the duct takeoff, and the duct register boot and the coupler to improve the efficiency of the duct system.