This category contains heavy-duty plastic 90º mounting collar/elbow for use in 2×4 stud walls. Use with 4-inch duct. With half-inch drywall lip already set, just nail in place and connect duct. Low depth profile makes this elbow the perfect solution for sidewall ventilation within a wall partition.

Manuals -

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  • 4" Low Profile Plastic Elbow (Fits in 2x4 Wall) View Specs

    $7.25 / each

    $69.50 / box
    10 x $6.95

    Non-Stock Item Allow 1-2 Weeks to Ship Out
  • 4" Adjustable (0 to 90°) Round Metal Elbow View Specs

    $19.15 / each

    Non-Stock Item Allow 7-10 Days to Ship Out