Classic Crest envelopes are some of the best in their class. ÊThey are dependable in quality, preformance and capatibility. ÊFSC certified, manufactured with 100% renewable green electricity and has a minimum of 30% post consumer recycle content. ÊTraditional #10 business sized envelope, 4 1/8″ x 9 1/2″ÊA #10 envelope with a square flap has a deeper flap than a traditional commercial style business envelope.