STI FP400 Firestop Plug, 4 In. W, 3 In. H 1503MFRMH Fitting Side A Tube Outer Fitting Side A Tube Outer Diameter 2 1 8 in Door Swing Reversible Gypsum Expansion Temperature 350 Degrees F Fire Resistance Type Intumescent Maximum Service Temperature 130 Degrees F Expansion Volume 10X Firestop Product Type Plug Interlocking No Firestop Type Plug Maximum Service Temperature 130 Degrees F
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STI FP400 Firestop Plug, 4 In. W, 3 In. H 1503MFRMH Fitting Side A Tube Outer