Fantech 4 inch Round to Oval Duct Elbow FEL 4
Item #: FEL4
This is a plastic 90 degree mounting collar/elbow for use in a 2 x 4 stud wall. The unique low depth profile makes this elbow the perfect solution for sidewall ventilation within a wall partition, as it transitions from a 4 inch round opening to an oval 3 1/2 inch x 4 7/16 inch opening.
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