Western Sulphite® (White Wove) Open End Catalog with First Class Border - Open End Catalogs have their flap on the short dimension. These envelopes are manufactured using SFI Certified white wove paper made with center seam construction, a preprinted first class border - with "First Class Mail" on the face - and a traditional remoistening seal.White Wove (SFI CERTIFIED) 92% Brightness Vellum Finish Green Diamond Border “First Class Mail” on Face Center Seam No Window Remoistening Seal Flap Down