Building Sheet Metal Ducts

Sheet metal ducts must first be tightly sealed resilient fibrous glass insulation thicknesses from 11 2 to 4 in.

Building sheet metal ducts.

The longitudinal seams and transverse joints in sheet metal ducts should be sealed. One end of each piece is crimped for easy fitting of consecutive joints or to sheet metal fittings and flexible duct. The recommended procedure to connect insulated flex duct to a metal collar is as follows. The inner liner of insulated plastic flex duct should be sealed where flex ducts are connected to other ducts plenums junction boxes and boots registers.

The master flow 36 in. This sheet of 30 gauge galvanized steel has a maximum temperature rating of 390. Choose from a full line of sheet metal ducts including elbow ducts ductwork tools duct wyes flexibles galvanized ducts and reducer ducts. Design polymerics 64 fl oz gray duct sealant.

Assemble the metal ducting like a zipper when assembling pipe start at one end and work the seam together like a zipper. For pricing and availability. Galvanized steel flat sheet can be cut to size for a tough hvac job that requires a customized fitting. 20 in x 25 in x 16 in duct square to round.

In stock and ready to ship. Get free shipping on qualified galvanized steel metal ducts or buy online pick up in store today in the heating venting cooling department. 38 to 102mm insulation boards fibrous glass insulation boards are also available for application to the outside of sealed sheet metal ducts housings and plenums. Galvanized sheet metal ducts from the duct shop s hvac ductwork is manufactured from high quality galvanized steel in 3 foot lengths for easy handling.

Choose from our selection of sheet metal ductwork including standard duct and fittings rectangular duct and fittings and more. Flange insert box with gasket. The seam on our galvanized sheet metal duct is formed on a snap lock machine which allows ease of assembly on your job site. We also offer a full line of ductwork accessories including duct tape duct sealer sheet metal screws and all the necessary sheet metal tools needed for a professional duct installation.

Use one hand to keep the two edges close and the other to apply downward pressure. To see availability for this product personlog in or get online access. Insulation used to externally insulate hvac ducts. Use your leg a workbench or the ground to support the back side of the pipe.