... :OpeningWire DiameterIn inchIn metric unit(mm)1/4" x 1/4"6.4mm x 6.4mm22,23,243/8" x 3/8 ... "10.6mm x 10.6mm19,20,21,221/2" x 1/2"12 ... ,19,20,211" x 1/2"25.4mm x 12.7mm16,17,18,19,20,211-1/2" x 1-1/2"38mm x 38mm14,15,16 ... available at request. Our Production line workshop: Products: Storage 75ft. 1/2 inch VINYL COATED WIRE MESH HARDWARE CLOTH