Closed on three sides to offer more security than a standard file folder. Unique design expands without gussets, so your paperwork can be inserted and stored neatly inside, without the interference of gussets. Double top tab. Large 150-sheet capacity. 11 pt. stock. File Jackets/ Sleeves/Wallets Type: Expanding Jacket; Global Product Type: File Jackets/Sleeves/Wallets-Expanding Jacket; Size: Letter; Height: N/A.