Popular poly envelope size is 150 x 115mm or 165 x 115mm.
Length: 175mmWidth: 125mmDescription: Invoice Enclosed Red [black & yellow print] 1000/Carton
Length: 165mmWidth: 115mmDescription: Invoice Enclosed Red [black & yellow print] 1000/Carton
Length: 150mmWidth: 115mmDescription: Unprinted 1000/Carton White
Length: 150mmWidth: 115mmDescription: Invoice Enclosed White [black & Yellow print] 1000/Carton
Length: 165mmWidth: 115mmDescription: Document Enclosed Red [black & yellow print] 1000/Ctn
Length: 235mmWidth: 175mmDescription: Unprinted Red500/Carton