Quality Park #10 Park Preserve Envelope, 4 1/8 X 9 1/2 Inches, White, 1000 count box (90020B) Business Envelopes in 1000ct. Park Preserve Bulk Pack Contemporary-style envelopes feature fully gummed flaps and 24 lb. / 92 Brightness White Wove paper Bulk shipping containers become re-usable and highly desirable letter-size file boxes A Sustainable product line utilizing SFI-certified papers in the conversion of envelopes. #10 (4 1/8 x 9 1/2") Business Envelopes in 1000ct. Park Preserve Bulk Pack