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Fiber Glass Duct Board Fabrication Instructions

Author(s)
Johns Manville
Organization(s)
Johns Manville
Publication Date
Description

Information sheet providing detail about hand fabrication of a one-piece straight duct from a 48" x 120" x 1" thick (1.22 m x 3.05 m x 25 mm) sheet where the total inside duct dimensions equals 112" (2.84 m) or less.