20''x24'' Pre-Stretched Aluminum Screen Printing Frames with 305 Yellow Mesh (6 Pack) High Quality Pre-stretched Aluminum Frames with 305 Mesh Count Yellow Mesh Frame Dimension Outside: 20''x 24''; Inside: 17.2''x 21.2''; Tub. 1 3/8"x1 3/8" Mesh Count: 305 tpi (Thread per inch); Mesh Color: Yellow; Tension: 17-19 N/CM The mesh surface of frames has been sandblasted, highly solvent-resistant glue Screens can be re-stretched repeatedly ensuring long term use