eBay

100 manila letter-size file folders; ideal for 8-1/2 x 11-inch documents
1/3 cut reinforced tabs in assorted positions (left, middle, right) for easy labeling and readability
11-point stock expands up to 3/4 inch while remaining sturdy
Made of 10% recycled content; 10% post-consumer material
Product Dimensions: 11.6 x 9.5 inches (LxH, overall), 3.8 x 0.5 inches (LxH, tab)

Amazon Basics 1/3-Cut Tab, Assorted Positions File Folders, Letter Size, Manila - Pack of 100

Amazon Basics