The Poxygrid Desk top bag holder Wire frame measures 8.5 x 12.7 x 21.6cm H (3 3/8 X 5 X 8 ½"). Economical and convenient frame securely holds a polyethylene bag 22 x 28cm (81/2" x 11") which is just the right size for collecting pipette tips, micro centrifuge tubes, etc., during routine lab use. Use with Scienceware Bench-Top BioHazard Bags 131820812 and 131660000.