Cougar Opaque - WHITE 28/70 - 5 1/2 Bar Envelopes (4 3/8 x 5 3/4) - 250 PK BARONIAL Envelopes Domtar (Weyerhaeuser) - Cougar Opaque Size: (Baronial) 5 1/2 BAR (4 3/8 x 5 3/4) BOX OF 250 Envelopes Basis Weight: 28/70lb Text (104 gsm) COUGAR PAPERS - now with 10% post-consumer recycled content. Known for its superior quality and performance, Cougar delivers the look of a more expensive text and cover sheet without the related high costs. It has a smooth white surface that keeps colors rich, images vivid and dot gain to a minimum, so your images stay crisp and sharp. Cougar Opaque, FSC certified, acid-free and has an enhanced printing surface combine to make Cougar the best value in the marketplace.