New Guardian Armour Envelopes Peel And Seal Gusset 50mm 135gsm Kraft Manilla 380x280mm [Box 100]

Amazon

Strong 130Gsm Manila Gusset Envelopes Gusset Allows Envelope to Expand to 25mm in Depth Secure Peel and Seal Envelopes with Power-Tac Adhesive for An Exceptionally Strong Seal Package Dimensions : 18.7L x 30.4W x 50.1H (Centimetres)

Euroffice

Extra strong pocket envelopes with 50mm gusset. Made from durable 130gsm paper reinforced with woven polyester thread. Strong peel and seal closure with Power-Tac adhesion. Size: 381 x 279 x 50mm. Colour: manilla. Pack of 100.