White Coin Envelopes 4152 Western Sulphite, Size 5-1/2, 3-1/8 x 5-1/2" 24 Lb., Box of 500. The popular envelope for payrolls, parts, tips, seeds and instruction enclosures. Made of strong 24 lb 92 brite white sulphite material with heavily gummed flaps and open end. Packed 500 per box.