... . 10, - 4-1/8in x 9 1/2 in , v-flap, security, 40counts per box No. 10, - 4-1/8in x 9 ... 1/2 in , peel & seal, plain, 55counts per boxNo. 10, - 4-1/8in x ... 9 1/2 in , peel & seal , security, 45counts per boxNo. 6, ... No. 6, and 2624 boxes for No. 10 Envelope No. 6 No. 10 plain security gummed v-flap, pull & seal