Envelopes
100 Strong 12" LP Record Vinyl Peel and Seal White Board MAILERS ENVELOPES Including Fragile Labels/Stickers - 625 Micron Cardboard SELF Seal Packaging MAILING Postal Postage Packets
Quality white cardboard / solidboard envelopes made from strong approx 625 micron board Envelopes include hot melt adhesive peel + seal / self seal strip on the closing flap, for security. Envelope also has hot melt glued seams for added strength...
https://www.bizrate.co.uk/envelopes/100-strong-12-lp-record-oid7242536196.html