Policy Catalog (4 1/8" x 9 1/2") Open End Envelopes Open End Policy envelopes have their flap on the short dimension. These envelopes are manufactured using durable, FSC Certified black wove paper, center seam construction and a traditional remoistening seal.Black Wove FSC CERTIFIED Smooth Finish Center Seam No WindowRemoistening Seal Flap Down