Two twenty-gauge J-runners join with two screws at two feet on center on the shaft side alongside a one-inch shaft liner. The main runner attaches to the ledger with number ten sheet metal screws on each side. A furring channel completes the assembly per ICBO WHI 694.0300.1 NEW-258.
TWO 20 GA J RUNNERS. JOIN WITH TWO SCREWS @ 2'-0"OC SHAFT SIDE 1" SHAFT LINER ATTACH MAIN RUNNER TO LEDGER W/ #10 SMS EA. SIDE FURRING CHANNEL ICBO WHI 694.0300.1 NEW-258
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