The PK Expandable Mailer is manufactured from recycled strong pankaduplex outerboard (400g/m2) and of a multifolded tough kraftliner innerliner.

The PK Expandanle Mailer is designed to be strong and protective. An extended flap for closure and reinforced edges of the mailer form a protective structure. The wedge-like design prevents the contents of the mailer moving whilst in transit.

The PK Expandable Mailer saves labour costs. Insertion and closure of this mailer is completed in half the time when compared to folding cartons. Strong, yet lightweight design additionally saves postage costs.

The PK Expandable Mailer is particularly suitable for mailing ringbinders, product folders, books, video cassettes, photo albums, catalogues, printed matter, etc.

Stock sizes

No Tuotekoko cmPaino
AS2R
35 x 25
150 g
AS3R
40 x 30
180 g



The PK Expandahle mailer can be over printed making it an attractive calling card for any business.

This unique PK Expandable Mailer is patented in Europe in addition to the U.S. and Japan.