500 #9 security self-seal envelopes, premium security tint pattern, ultra strong quick-seal closure - no window, enveguard, size 3-7/8 x 8-7/8 inches - white - 24 lb - 500 count (30138) aimoh 500 #9 security self-seal envelopes, premium security tint pattern, ultra strong quick-seal closure - no window, enveguard, size 3-7/8 x 8-7/8 inches - white - 24 lb - 500 count (30138)