Economy 1 in x 2 in. Insulation mesh. A great replacement for insulation installers using wire batt supports or poly string. It doesn’t rust or retain moisture and once installed. Will hold insulation in place in crawl spaces basement ceilings and garage ceilings. Cover with the drywall as per your codes for basements and garage ceilings. It is also used to hold insulation in place between walls until drywall is in place.