Abstract: A hanger for freely seating a flexible duct. The hanger has a proximal end that can be attached to a support structure, such as a beam or joist, and a distal end with a cradle. The cradle includes a near end defining a transition between the cradle and the distal end, and a remote end opposite the near end such that together they define a duct insertion gap between them. The duct insertion gap is greater than the diameter of the flexible duct such that the duct can be freely seated in the cradle. A duct-engaging surface extends between the near and remote ends of the cradle, and is defined by an exaggerated contact area along at least a portion thereof. The extra surface provided by the exaggerated contact area can engage more of the outer wall surface of the flexible duct, thereby distributing the weight of the duct over a larger area and reducing the likelihood of crimping and sagging such that airflow is not adversely effected.

Abstract: An adapter including a central body portion and a mount for connection to each of an HVAC register cover and duct-engaging boot. A surface of the central body portion includes mounting apertures, each configured to accept a fastener so that the central body portion can be mounted to a support structure, such as a ceiling joist. The adapter includes a register cover mounting surface that is adjustable so that it can accommodate different-sized register covers. The adapter also includes a boot mounting surface coupled to the register cover mounting surface such that, upon engagement between the register cover mounting surface and the register cover and upon engagement between the boot mounting surface and the boot, fluid communication between the boot and the register cover is established. Preferably, the adapter is made from a plastic, and more particularly an injection-molded plastic.

Abstract: A hanger for freely seating a flexible duct. The hanger has a proximal end that can be attached to a support structure, such as a beam or joist, and a distal end with a cradle. The cradle includes a near end defining a transition between the cradle and the distal end, and a remote end opposite the near end such that together they define a duct insertion gap between them. The duct insertion gap is greater than the diameter of the flexible duct such that the duct can be freely seated in the cradle. A duct-engaging surface extends between the near and remote ends of the cradle, and is defined by an exaggerated contact area along at least a portion thereof. The extra surface provided by the exaggerated contact area can engage more of the outer wall surface of the flexible duct, thereby distributing the weight of the duct over a larger area and reducing the likelihood of crimping and sagging such that airflow is not adversely effected.

Abstract: A plastic form having two or more sections and a hinged joint therebetween can be folded about the hinged joint and joined together by fastening devices to form a plastic duct connector for heating, ventilation and air conditioning systems.