We have an extensive selection of DuoDerm dressings including DuoDerm dressings in 4" x 4" size:

Convatec 187658 DuoDerm CGF 4 x 4 Dressing

Convatec 187971 DuoDerm CGF with Adhesive Border 4 x 4 Dressing

Convatec 187955 DuoDerm Extra Thin CGF 4 x 4 Dressing

Convatec 403326 DuoDerm Signal CGF 4 x 4 Dressing