tyvek self-seal open end expandable envelopes - 10 x 13 x 2 tyvek self adhesive grommet tabs tyvek self-seal open side expandable envelopes - 12 x 16 x 4 tyvek self-seal white envelopes - 9 x 12 tyvek self-seal white envelopes - 12 x 15 1 2 tyvek self-seal "first class" border envelopes - 9 x 12 tyvek self-seal white envelopes - 6 x 9 tyvek self-seal white envelopes - 12 x 15 1/2" 100/case tyvek self-seal open end expandable envelopes - 10 x 13 x 1 1 2 tyvek self-seal open side expandable envelopes - 10 x 13 x 2