description super duty m22 type 1aa aluminum ladder when you need industrial-strength, only one ladder will do the little giant type 1aa. it’s government rated to a whopping 375 lb., so you know it can stand up to even the most demanding applications. the type 1aa gives you the advantages of traditional a-frame ladders, extension ladders, stepladders and even scaffolding all in one convenient package. the little giant is designed to be the safest ladder on the planet and can be used safely on stairs, ramps, curbs, docks or other uneven surfaces. the little giant is made of heavy-wall, 6005-t5 aluminum, the very same material used in aerospace construction. when you buy a little giant, you’re getting the world’s most versatile ladder system. the m22 has a step ladder height of 5 ft. & adjusts up to 9 ft. in 1 ft. increments. the extension height is 11 ft. & adjusts up to 19 ft. in 1 ft. increments. this ladder stores in 4 ft. 7 in. of space. california proposition 65 warning. features rated to hold up to 375 lb. fully adjustable for stable use on stairs, curbs ramps and more complies with all applicable osha & ansi standards use a true professionals ladder that is built to stand a heavy duty payload and is backed by a lifetime warranty heavy-wall aircraft-grade aluminum assembled in the usa specifications acme tools brand name little giant safety acme tools part number 10403w ansi approved yes ansi ladder rating type iaa assembled weight (lbs) 54 base spread (in) 27.5 base width (in) 27.5 california proposition 65 warning required no country of origin china csa certified no duty rating (lbs) 375 globaltradeitemnumber (gtin) 00096764403003 internal supplier part # 10403 internet product code (ipc) 7f1f0677a53 ladder length (ft) 19 ladder material aluminum ladder type multi position manufacturer warranty limited lifetime material aluminum meets ansi or osha standards yes number of positions 33 osha approved yes package depth 8 package height 68 package weight 54.0 package weight (lbs) 54 rail material aluminum rung/step depth (in) 1 rung/step material aluminum telescoping yes top cap material aluminum upc 096764403003 weather resistance yes weather resistant yes width (in) 28