These dust collector bags fit Jet dust collector models 1100 and 1200. They are comparable to dust collector bag model 709563. They measure 19.5” in diameter (31” wide) x 38” long. Every bag is made of heavy duty plastic measuring 5 mils thick for maximum durability and reusability. The bags are clear so that you can easily see when it is full. Buckeye Farms dust collector bags are 100% made in the USA.