4" 90 Degree Adjustible Galvanized Elbow.
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4" 90 degree Elbow are made from galvanized sheet metal for residential and commercial use with heating and air conditioning ductwork, flue piping and venting, exhaust fans, etc… Elbows are adjustable for attachment for flex or metal ductwork.
Their rigid properties will keep flexible duct from collapsing.
The elbows can be attached to supply and return air plenums and boxes.
Elbows are connected with drive screws then duct taped and then in many cases, covered with fiberglass insulation.
See our Tape and Sealers section for materials.
Sizes range from 3" to 20" diameter.
We also can manufacture any special Duct Needs that you may have.