7 1/2″ Aluminum I Beam 12″ Poly Keel Pad has been added to your order form. Checkout View Order Form $32.95 Sold By The Foot. 7 1/2" Aluminum I Beam quantity Add To Order Form SKU: 218 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 3″ X 3″ Straight Crossmember Aluminum 76″ $125.95 Part #:4427 Any Crossmember Over 76" Long. Add To Order Form 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