single wall duct & fittings are factory fabricated and supplied with factory applied sealant on all longitudinal joints for S & Drive slip ducts and additionally on transverse joints for all flanged end ducts & fittings.
can be supplied either fully assembled form or knocked down form for straight ducts (minimum requirement for assemble of straight ducts on site) fittings will be delivered fully assembled with factory applied sealant.
can be supplied in various materials:
G, galvanized steel (in accordance with ASTM 653, G90 coating)
H, stainless steel (in accordance with ASTM A240/480 and various material grades)
A, aluminum metal (in accordance with ASTM B209, type alloy 3003, H14)
P, painted galvanized steel (as G, but with various paint system i.e. epoxy…)