Unlike many tubular designs you will find in the marketplace, we only use Schedule 40 pipe in all our pipe designs. This is the same strong and heavy Industrial steel pipe that is used in the Construction industry, for gas lines, water lines, sprinkler systems, etc;. THE WALL THICKNESS OF OUR PIPE IS MORE THAN 3X THAT OF OTHER IMPORTED LADDERS SO IT IS VERY STRONG. For more info please see FYI below. Package includes: 1 ladder, 18"W (add 2 inches for the mounting flanges), 1 of item #617 48"L, side mount guardrail and 1 of item #427 Grab bar. all finished in your choice from the available list. With the Two tone finish, the pipes are black satin and the fittings are Antique brass, Please note: IF YOU WANT THE LADDER ONLY, PLEASE SEE ITEM #622. Some variations and imperfections are to be expected with industrial steel. IMPORTANT. If the guardrail will be used on a loft which has standing room, then you should check with your municipality on code requirements. Assembly required. CUSTOMIZATION AVAILABLE. Height is measured from the floor to the center of the top mount. The 72" and up ladders will have a middle wall support. FYI Pipe sizes are identified by the inside diameter.(Type SCH40) This chart will give you insight as to what OUTSIDE DIAMETER to expect when you purchase a given item. Pipe size (in inches) Outside diameter(in inches) 0.50 0.84 0.75 1.05 1.0 1.315 1.25 1.66 1.5 1.9 2.0 2.375 Pipe sizing is identified in all EverythingSteelCA products.