4 1/2″ Aluminum I Beam 3″ X 3″ Straight Crossmember Aluminum 82″ has been added to your order form. Checkout View Order Form $19.95 Sold By The Foot. 4 1/2" Aluminum I Beam quantity Add To Order Form SKU: 215 Category: Crossmembers **Price Is Per Foot** Related products 8″ Aluminum I Beam $49.95 Part #:219 Sold By The Foot. Add To Order Form 82″ Aluminum “V” Crossbar $143.95 Part #:1183 Fits Up To A 82" Wide Frame Width. Add To Order Form 12″ Poly Keel Pad $15.95 Part #:1193 Fits 3" Wide Crossmembers. Add To Order Form 10″ Aluminum I Beam $76.95 Part #:4812 Sold By The Foot. Add To Order Form