![Amazon.com : Triplast 229 x 162 mm A5 C5 Manilla Hard Board Backed Envelopes (Pack of 50), brown : Office Products Amazon.com : Triplast 229 x 162 mm A5 C5 Manilla Hard Board Backed Envelopes (Pack of 50), brown : Office Products](https://m.media-amazon.com/images/I/71DA+zieKLL.jpg)
Amazon.com : Triplast 229 x 162 mm A5 C5 Manilla Hard Board Backed Envelopes (Pack of 50), brown : Office Products
![Amazon.com : ARPAN 162 x 114 mm A6 C6 Manilla Hard Board Backed Envelopes Do Not Bend (Pack of 100) : Office Products Amazon.com : ARPAN 162 x 114 mm A6 C6 Manilla Hard Board Backed Envelopes Do Not Bend (Pack of 100) : Office Products](https://m.media-amazon.com/images/I/81OD-JwYdSL._AC_UF894,1000_QL80_.jpg)
Amazon.com : ARPAN 162 x 114 mm A6 C6 Manilla Hard Board Backed Envelopes Do Not Bend (Pack of 100) : Office Products
![C4 Board Backed Envelopes | A4 Board Backed Envelopes | STRONG A4 C4 Size Hard Back Envelopes | Heavy Duty C4 Board Backed Envelopes C4 Board Backed Envelopes | A4 Board Backed Envelopes | STRONG A4 C4 Size Hard Back Envelopes | Heavy Duty C4 Board Backed Envelopes](https://www.defendapack.com/image/cache/catalog/c4-board-backed-envelopes-500x500.jpg)
C4 Board Backed Envelopes | A4 Board Backed Envelopes | STRONG A4 C4 Size Hard Back Envelopes | Heavy Duty C4 Board Backed Envelopes
![Amazon.com : Arpan 324mm x 229mm A4 C4 Manilla Hard Board Backed Envelopes Do Not Bend (Pack of 20) : Office Products Amazon.com : Arpan 324mm x 229mm A4 C4 Manilla Hard Board Backed Envelopes Do Not Bend (Pack of 20) : Office Products](https://m.media-amazon.com/images/I/61r5m4PewHL.jpg)
Amazon.com : Arpan 324mm x 229mm A4 C4 Manilla Hard Board Backed Envelopes Do Not Bend (Pack of 20) : Office Products
![Amazon.com : Arpan 324mm x 229mm A4 C4 Manilla Hard Board Backed Envelopes Do Not Bend (Pack of 20) : Office Products Amazon.com : Arpan 324mm x 229mm A4 C4 Manilla Hard Board Backed Envelopes Do Not Bend (Pack of 20) : Office Products](https://m.media-amazon.com/images/I/61DmRKrzLoL.jpg)
Amazon.com : Arpan 324mm x 229mm A4 C4 Manilla Hard Board Backed Envelopes Do Not Bend (Pack of 20) : Office Products
![Amazon.com : Arpan 324mm x 229mm A4 C4 Manilla Hard Board Backed Envelopes Do Not Bend (Pack of 20) : Office Products Amazon.com : Arpan 324mm x 229mm A4 C4 Manilla Hard Board Backed Envelopes Do Not Bend (Pack of 20) : Office Products](https://m.media-amazon.com/images/I/31VHeIwlUqL._AC_.jpg)