Guardhouse Glassine Envelopes & Box for No. 4 Glassines

Guardhouse glassine envelopes are made from pH-neutral, semi-transparent paper free of harmful chemicals, making them a safe and dependable choice for storing stamps and coins. The flaps are folded to the exterior of the envelope, creating a smooth interior pocket that helps prevent stamps or other delicate contents from catching or tearing.

Manufactured using durable 55 gsm (38 lb.) paper, these glassines offer resistance to water, air and grease, providing reliable everyday protection for philatelic materials. The envelopes feature ungummed flaps for easy access and repeated use. In addition to stamps and coins, they are also well suited for storing photos, negatives, artwork, invitations, seed packets and other small collectibles.

No. 4 glassines measure 3 1/8 x 5 1/16 inches (approximately 7.9 x 12.9 cm).

For organized storage, the Black Box for No. 4 glassines is designed specifically to hold 3 1/8 x 5 1/16 inch envelopes. The box measures 14 x 5 1/4 x 3 1/2 inches (approximately 35.6 x 13.3 x 8.9 cm), offering a sturdy and practical way to keep glassines neatly arranged and easily accessible.