Aluminum “V” Crossbar Fits Up To A 82″ Wide Frame Width. SKU: 1183 Category: Crossmembers **Call For Custom Lengths** Related products 4 1/2″ Aluminum I Beam Call For Price Part #:215 Sold By The Foot. 12″ Poly Keel Pad Call For Price Part #:1193 Fits 3" Wide Crossmembers. McClain Frame To Crossbar Support Call For Price Part #:2332 Used With The 4 1/2" And 5 1/2" Tall I Beam. 7 1/2″ Aluminum I Beam Call For Price Part #:218 Sold By The Foot.