Royal Mail PIP Large Letter Boxes C4 C5 C7 DL Postal Box Brown Card Board
C4 Size: 340mm x 240mm x 24mm (L x W x H). C7 Size: 101mm x 101mm x 24mm (L x W x H). C5 Size: 240mm x 160mm x 24mm (L x W x H). You can choose from quantities from - 2/5/10/25/50/100/150/200/250/300/400/500/600/800/1000/2000/5000pcs.