Quality Park™ Clasp Envelope, 6 1/2 x 9 1/2, 28lb, Brown Kraft, 100/Box. Color: Brown, Kraft. Quality Park™ Clasp Envelope, 9 1/2 x 12 1/2, 32lb, Brown Kraft, 100/Box. Quality Park?. Park Ridge Embossed Window Envelope, #10, 4 1/8 x 9 1/2, White, 50.