300 Features: -Opens to 94-1/2", closes to 39".-Also use as a table easel.-Patented Auto-Lock clamp.-Adjustable canvas holders.-Rubber tips prevent slipping.-Leg spikes for outdoor use.-Supports standard paint boxes. Dimensions: -Holds canvases up to 60" high.-Aluminum legs -- 3/4" and 5/8" dia..-Weight: 3.5 lbs.