Choosing a box size
Inside dimensions, fit and cushioning.
Are box sizes inside or outside measurements?
Box sizes on this site are listed as inside dimensions: length × width × height. We confirm exact specifications by email before you order.
How much extra room should I leave?
Leave room for cushioning on every side if the item is fragile. The Box Finder lets you add 1 to 3 inches to each dimension before it matches boxes.
What does ECT mean?
ECT (Edge Crush Test) is a rating for how much stacking load corrugated board can take. Higher numbers generally mean stronger board.