4'88'4 11GA Jack Post, Tiger Brand Jack Post, Mfr#: J-PRO-100

4’8 To 8′ 4, 11 Gauge Adjustable Jack Post , Max Ext Load 20,000 LB, Min Ext Load 38,000 LBS, Additional Support For Crawl Spaces, Attic, Staircase Or Decks, Adjusts With 34 Wrench OD Gauge Tube Dim 214 x 11 Gauge x 49, Screw Size 114 x 7, 5 Thread Support, Collar Size 212 x 58 Support, Corrosion Resistant Inside Out, Double Carriage Bolt Nut, Zinc Coated, For Added Safety, Heavy Plates Suited For Wood Steel, Deep Dish SelfCentering Plates