5 1/2″ Aluminum I Beam 105″ 3″ X 3″ Aluminum Straight Crossbar Extended Step has been added to your order form. Checkout View Order Form $23.95 Sold By The Foot. 5 1/2" Aluminum I Beam quantity Add To Order Form SKU: 216 Category: Crossmembers **Price Is Per Foot** Related products 3″ X 3″ Straight Crossmember Aluminum 58″ $97.95 Part #:4223 Any Crossmember Over 58" Long. Add To Order Form 10″ Aluminum I Beam $76.95 Part #:4812 Sold By The Foot. Add To Order Form 8″ Aluminum I Beam $49.95 Part #:219 Sold By The Foot. Add To Order Form 3″ X 3″ Straight Crossmember Aluminum 82″ $133.95 Part #:4815 Any Crossmember Over 82" Long. Add To Order Form