The number of threads per linear inch. Ranging from 40 to 300+. A lower count (like 110 Mesh) deposits heavier amounts of ink, ideal for glitter or thick inks, while a higher count (like 200 Mesh) is suited for fine-detailed graphic printing.Tension: Polyester or nylon monofilament yarns stretched tightly across the frame are standard. A tension rating of at least 18 to 25 Newtons/cm ensures the mesh snaps back quickly off the fabric after the squeegee passes, keeping lines sharp.Chemical Resistance: Good dimensional stability under high tension is required so the mesh does not warp when exposed to wash-out water, emulsion, or solvent-based inks.