Western Fiber-Added™ Commercial Regular - These commercial envelopes are manufactured with a light fiber-enhanced imaging finish, diagonal seams, no window and a traditional remoistening seal. Available in multiple soft hues taken from nature. Note: Due to presence of fiber, these envelopes may not meet the USPS print contrast ratio for automation discounts.Recycled Fiber-Added Colored Sulphite Acid Free Smooth Imaging Finish Diagonal Seams No Window Remoistening Seal Flap Down