eBay

DIMENSIONS: Inside dimensions measure 11 1/4-inches (length) x 8 3/4-inches (width) x 12-inches (height), Carton capacity is approximately 0.684 cubic feet
APPLICATIONS: These cartons were designed to fit the most popular paper sizes; Prevent damage to forms, catalogs, letterhead and other printed materials by using the right size carton
TOP QUALITY: These boxes are the industry standard and proudly made in the United states; Aviditi corrugated boxes are easy to assemble and fold together in seconds;
MATERIAL AND STRENGTH: Standard strength industrial corrugated boxes are manufactured from 200#/ECT-32 single wall, c-flute kraft corrugated. Estimated weight capacity is 65 lbs. (This is only a guide, weight must be distributed evenly)
PACKAGING: Package includes 25 boxes and ship flat to save on storage, space and shipping;Corrugated boxes are reusable and recyclable

From the manufacturer

Application	Shipping, mailing, storing and packing small items	Shipping small, lightweight fragile items	Shipping documents, books, stationery and catalogs	Shipping important documents, books, catalogs, photos and clothing	Shipping artwork, books, frames and reports
Construction	200#/ECT-32, kraft corrugated	200#/ECT-32, kraft corrugated	200#/ECT-32, kraft corrugated	200#/ECT-32, kraft corrugated	200#/ECT-32, kraft corrugated
Flute	C	B	B	B	B
Assembly Type	Tape	Fold	Fold	Fold	Tape