Bauer builds Professional Grade. This fiberglass single step ladder comes with a OHSA/ANSI compliant 375lb Type 1AA Rating. Our non-conductive full channel side rails are 50% thicker in the flange and radius than competitive models for the strongest stepladder rail available. All of our ladders are built with solid rivet construction. Our non-marring boots provide complete side rail protection and increased slip resistance on all surfaces. You will find comfort and lower fatigue when climbing our step ladders, as we provide a 20% gentler climing angle than our competition. .