t: 01732 760 255
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Xpert Envelopes Ltd.
PO Box 626,
Kent, ME17 4XD
Envelope Sizes and Styles
Bespoke – made up envelopes to customer requirements. Not available from stock.
GSM – the weight of the paper, measured in g/m2.
Gummed – sealing method that requires moistening to seal.
Gusset – an envelope with expandable sides.
Mailing wallet / machinable – envelope for use on an inserting/mailing machine.
Opaque – printed colour wash inside envelopes (usually for security reasons).
Peel and seal – sealing method with a peel off strip.
Pocket – envelopes with the flap on the short edge.
Recycled – envelopes made from post-consumer waste.
Self seal – sealing method where the two flaps are pressed together to form an instant bond.
Wallet – envelopes with the flap on the long edge.