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…