Blue Summit Supplies #9 Invoice Envelopes, Windowless, Self Seal, 500/Pack BSS-92588-020 Our red 1 divider classification

Our red 1 divider classification folders are designed to hold over 100 files of medical or office files between 4 sections thanks to our thick pressboard and paper stock with 2” expansions

sturdy rivet to spine construction

while others will hide parts of the addresses

Durable Construction prevents even large documents or magazines from failing out during transit

Blue Summit Supplies #9 Invoice Envelopes, Windowless, Self Seal, 500/Pack BSS-92588-020 Our red 1 divider classification#9 Windowless Security Envelopes Create Completely Secure Mail We understand how difficult it can be to find security or privacy envelopes that completely secure and hide your envelope contents throughout the mailing process. Our envelope design protects your mail contents throughout transit all the way to its destination. Windowless design is the safest type of envelope, with no chance of confidential information showing through windows. Easily