heavy duty step ladder

Listed capacities vary by model: many listings show a 330 lb capacity, some household folding stools list about 225 lb, and a few heavy-duty or marine models are specified up to 500 lb.

Common safety features include non-slip treads on the steps, rubber or non-slip feet, padded or textured handgrips, and locking mechanisms that secure the ladder when in use.

Tread sizes vary by model. Examples from listings include top steps around 15"×10", marine-style treads about 13.8"×3.1", and other top steps roughly 12"×8".

Assembly requirements vary by model: some ladders arrive fully assembled, others require adult assembly. Where assembly is needed, listings may note that tools are provided or that no tools are required.

Several household step ladders list per-step or overall capacities around 330 lb, some models state overall capacities up to 500 lb, and at least one folding work ladder lists a tool-tray capacity of 11 lb.