How To Measure Folding Cartons and Mailers

Ensuring a proper fit for your product and package is essential. Whether making sure your mailer fits your product or confirming you are buying the same carton you have, knowing how to measure your cartons and mailers will help ensure the right fit.

Folding and Mailing Cartons have three dimensions - Length (L) Width (W) Depth (D) and the dimensions are given as Length x Width x Depth (L x W x D). It is best to open the carton or mailer at the glue flaps and lay it blank side flat. Measure from the center of the score lines to the nearest sixteenth of an inch.

Length, also known as the opening/hinge dimensions is measured from left to right as the carton faces you.
Width is measured from front to back.
Depth is measured from top to bottom.