Heavy duty board back envelopes in white and manilla, made using 1000 micron backing board and a heavyweight face paper to ensure protection when posting bendable items.
Blake Board Back Envelope Peel and SealML C4 324x229mm PK125
Board Back P&S ML 267x216mm PK125
Board Back P&S ML 318x267mm PK125
Board Back Pocket P&S WT C4 PK125
