White A2 Envelopes, 4 3/8" X 5 3/4" Booklet, Bulk 1000/carton Lowest priced bulk a2 envelopes! Perfect for 4" x 5" greeting cards! These A2 Envelopes are made from a 24lb bond / 60lb text (90 gsm) white wove paper. They are inkjet & laser printer compatible. White Wove Sub. 24 A2 size 3/8" x 5 3/4" Booklet Style Flap (NOT square flap) Made in the USA!