JAM Paper Regular square envelope in a pack of 25 has dimension of 7.5" x 7.5" is white in color with peel and seal closure. Envelope comes in a range of sizes for personal use, business style envelopes, large clasp and booklet envelopes..25 envelopes per pack.Paper weight: 28 lbs..Envelope type: Business.Square envelopes are inherently unique.Opening: Square.Size: 7 1/2" x 7 1/2".Material: Paper.Closure: Gum.Finish: Smooth.JAM Paper Regular square envelope of dimension 7.5" x 7.5" in white color with peel and seal closure is perfect for greeting cards, invitations, weddings or any announcement.