General specifications of window screen:14mesh x 14 mesh, 16mesh x 14mesh, 16mesh x 16mesh, ... ,24,23,22,21,20,19,181-1/4"32mm22,21,20,19,181-1/2"40mm22,21,20,19,18,172 ... (ft)Strand1"25mm22,21,20,182'11-1/4"32mm22,21,20,183'21-1/2"40mm20,19,184'32"50mm20,19 ... /2"13mm0.9mm,0.1mm1"25mm1.0mm,1.2mm,1.4mm1-1/2"40mm1.0mm,1.2mm,1.4mm,1.6mm2"50mm1.0mm,1.2mm,1.4mm,1.6mm window screen