304 Stainless Steel Perforated Sheet 18″x18″ .040 1/8″ Round Holes 33% Open 103
(20 gauge). Due to its austenitic structure, it is only slightly magnetic. Material: 304 Stainless Steel (AISI 304 / 1.4301). Why Choose This Perforated Sheet High-quality 304 stainless steel. 304 Stainless Steel Sheet. 023″ x 4″ x 6″ 20ga 0600106.