PPS Plainface DLX Envelopes White 500 Pack These PPS Plainface DLX Envelopes are a great size for sending out A4, A5 and A6 documents. They are plain faced so you can write on them freely or affix your own address labels. PPS Window Faced DLX Envelopes White 500 Pack These PPS Window Faced DLX Envelopes are a great size for sending out A4, A5 and A6 documents. These envelopes are mostly plain faced with a clear window so you can position the documents inside to show the address. The clear window protects the address inside so you can be sure that it will reach the intended recipient. Tudor DLX Kraft Envelopes 50 Pack Each Tudor DLX Kraft Envelope is plain faced so you can write freely on the front or affix address labels for a more professional look. They are side opening and have a pocket style so you can easily slide your folded mail inside. Stock up on envelopes with this handy pack of 50.