Famous Duo-Safety Rail Construction provides the advantage of extra strength without cumbersome weight. Ideal for pumper use - these outstanding ladders have been proven and approved for many years by fire departments everywhere. Installed with standard 3/4" hooks or heavy duty 7/8" hooks for an additional fee. Series 775-A: Channel Rail Construction 750 lb Duty Rated Prong Feet as Standard Rubber Safety Shoes Optional for Hard Surface Use Series 775-A Roof Specifications: Size Closed Length Width Rail Size Weight* 10' 10' 2.25" 19" 2.75" 22 lbs 12' 12' 2.25" 19" 2.75" 24 lbs 14' 14' 2.25" 19" 2.75" 28 lbs All dimensions listed are N.F.P.A. Design Verification Standards. Variations occur in each product of approximately +/- .125" due to the type of rivets, nuts, bolts etc. used. * Weight listed is actual weight of product only.