3″ X 3″ Straight Crossmember Aluminum 82″ 6 1/2″ Aluminum I Beam has been added to your order form. Checkout View Order Form $133.95 Any Crossmember Over 82″ Long. 3" X 3" Straight Crossmember Aluminum 82" quantity Add To Order Form SKU: 4815 Category: Crossmembers Related products 12″ Poly Keel Pad $15.95 Part #:1193 Fits 3" Wide Crossmembers. Add To Order Form McClain Frame To Crossbar Support $4.95 Part #:2332 Used With The 4 1/2" And 5 1/2" Tall I Beam. Add To Order Form 6 1/2″ Aluminum I Beam $26.95 Part #:217 Sold By The Foot. Add To Order Form 3″ X 3″ Straight Crossmember Aluminum 80″ $130.95 Part #:4425 Any Crossmember Over 80" Long. Add To Order Form