VertiRack side mount Vertical Truck/Trailer Ladder Racks, are manufactured of high strength, anodized aluminum alloy and stainless steel; providing a lifetime of rust free, trouble free performance. The ladder securing straps are molded of transportation grade rubber, which is impervious to hot or cold climates and is UV, salt and chemical resistant. Includes 2 ea. 21 1/2" (546mm) high Vertical Rails, 2 ea. Ladder Support Arms, and 2 ea. Ladder Securing Straps. The Rubber Treaded Ladder Support Arms and the Rubber Ladder Securing Straps isolate ladders from ladder rack contact, eliminating ladder wear. Infinite adjustability allows the Ladder Support Arms and the Ladder Securing Straps to be positioned anywhere along the ladder rack's vertical height. Universal racks supplied with through hole mounting kit and 3/8" (9.5mm) long standoffs. LADDER RACK CAPACITY IS 1 LADDER UP TO 18" (457mm) IN WIDTH