With all screens other than Retensionable, you can stretch mesh to its maximum tension and glue the mesh to the frame, but two hours later the mesh will have lost 25% of the tension. As you print with such screens, you continue to lose tension. Then you may experience color registration problems, ink driven into the fabric, ink build up under screens that needs to be cleaned and more problems. Sizes Most Commonly Sold 23" wide by 31" long O.D. with square bar...$59.10, or all 4 sides as rollers $49.50 18" wide by 20" long I.D. with square bar.$36.95 8.5" x 12" O.D. cap frame $36.95 Mesh is extra. See Mesh for pricing. To get started all you need are Alignment Clips ($8.60/pkg), instructions in Support, and two wrenches you own or can purchase at a hardware store. For other pricing options and to order call 1-800-500-2279.