4 1/2″ Aluminum I Beam $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 105″ Aluminum V Crossbar Extended Step $162.95 Part #:1185 Extends Past The Frame For Extra Fender Support. One Front And One Rear Of The Fender. Up To 105" Long. Add To Order Form 12″ Poly Keel Pad $15.95 Part #:1193 Fits 3" Wide Crossmembers. Add To Order Form 3″ X 3″ Straight Crossmember Aluminum 82″ $133.95 Part #:4815 Any Crossmember Over 82" Long. Add To Order Form 5 1/2″ Aluminum I Beam $23.95 Part #:216 Sold By The Foot. Add To Order Form