Does exactly what it says it does, and does it well! I purchased two of these and built my own frames out of 3/4″ galvanized conduit, welded. The vinyl is plenty thick and works well for both welding and keeping grinding sparks from straying too far. These are for my home shop, so keeping sparks from all the other “stuff” is of the utmost important. I feel these do a great job of that! Size wise, these varied just slightly from each other, within 0.5″ to 1″. Widths were 93″ and 94″, heights were 71.5″ and 72″.