Cardboard LARGE LETTER POSTAL BOXES 400 STRONG A4 C4 PiP POSTING Mailing Postage
C4 PiP – 320mm x 230mm x 21mm. Mini PiP – 101mm x 101mm x 19mm. DL PiP – 217mm x 108mm x 20mm. C5 PiP – 218mm x 159mm x 19mm. Maxi PiP – 347mm x 246mm x 20mm. Quality Materials & Design Are Your Product's Best Defence.