Speedi-boot 90 register vent boot w/ adj. Hangers for hvac duct work, 4 in x 8 in x 4 in speedi-boot is the only innovation in the hvac boot industry in over 40 years. speedi-boot allows you to save time, labor, money, & energy w/one simple installation. speedi-boot reduces installation time from approx. 20 min plus to 2 min or less. studies show that standard hvac boots take more than 20 mins on average to install while speedi-boot eliminates the need to install wood or prefab steel support framing & the need to buy additional materials, set up saws etc. w/one trip up the ladder for ceiling or wall installations, simply extend the telescoping arms, fasten w/the pre-attached nail & or screw in place, adjust the positioning and you’re done. The air tight gasket eliminates air leakage saving you money & energy. studies have shown that a simple inch space in your hvac system is equal to a 20 inch hole in the side of your house. speediboot prevents dust & debris contamination in hvac systems during construction, which improves indoor air quality & saves energy. the rigid galvanized frame has predrilled holes for easy grille/register installations; no more sagging registers. the mud ring prevents boot deformation and gaps between the boot and building envelope creating a professional fit and boot termination. Speediboot also helps meet the energy star guidelines & leed 5.1 & ieq 3.1 credit. Speedi-boot is for remodeling, new construction, do it yourself, residential / commercial hvac projects w/over 150 sizes and styles to choose from for almost any project application. features speedi-boot is assembled in the usa w/domestic and imported parts simple telescoping hanger arms save installation time and labor cost, and that can saves you 20 minutes or more per boot installation speedi-bootsinnovative foam gasket seals air tight at installation that reduces energy loss and saves money spe