#10 security self-seal envelopes, no.10 windowless bussiness envelopes, security tinted with printer friendly design - size 4-1/8 x 9-1/2 inch - white - 24 lb - 500 count herkka 500 no. 10 self seal security envelopes - 10 envelopes self seal designed for secure mailing - security tinted with printer friendly design - number 10 size 4 1/8 x 9 1⁄2 inch - pack of 500