This Werner? 16-foot Aluminum Compact Extension Ladder provides the support you need for at home or the job site. It�Æs a 3-section ladder with a maximum extended height of 16-feet. The Werner compact extension ladder can effectively support 225 pounds of weight. Operating the ladder is easy by means spring-loaded locks for smooth extension. It compacts down to 6-feet for your storing convenience. This aluminum extension ladder features Traction-Tred? rungs to prevent you from slipping and falling. It�Æs also weather resistant which means you can use it both outdoors and indoors. The surface which the ladder rests against is protected from damage by marring-resistant end caps. The Shu-Lok? feature allows for the shoes to lay flat or stay in spur position. This Werner 16-Ft aluminum compact extension ladder is OSHA approved and safe to use.