A telescoping box is two separate pieces: a base that holds the product and a lid that slides down over it. That is why a single set of numbers is never enough. The size that matters is the internal dimension of the base, written length x width x depth, and the lid is cut fractionally larger so it clears the base walls without binding.
There is no industry-wide telescoping size chart, and any supplier who hands you one is showing you their own tooling, not a standard. What you can rely on is the method below.
What each dimension refers to
Length is the longer of the two opening edges. Width is the shorter one. Depth is the wall height of the base, measured inside. If you supply an external number, the internal space shrinks by roughly twice the board caliper on each axis, which is the single most common reason a first sample will not close over the product.
The lid is the part buyers forget to specify. A lid that fits too tightly scuffs the print on the base wall every time it is opened. A lid that fits too loosely slides off in transit. Say on the quote that you want the lid clearance set for repeated opening if the box is a gift or a returns-friendly ecommerce box.
Telescope styles and what each one does to depth
| Style | Lid travel | What it is good for |
|---|---|---|
| Full telescope | Lid reaches the base floor | Maximum sidewall support, double thickness all the way down, heavier or stacked loads |
| Partial telescope | Lid covers part of the base wall | Presentation boxes where a band of base colour is meant to show |
| Tray and lid | Shallow lid, shallow base | Flat products, apparel, printed keepsake packaging |
Because the lid sits outside the base, a telescoping box tolerates a range of contents heights rather than one exact height. If your product line varies in depth, this is the reason to choose the style at all.
How to derive your own internal size
- Measure the product at its widest point, not at its label. Handles, caps and moulded corners decide the number.
- Add clearance on each axis for the insert, tissue or void fill you actually intend to use. If you have not chosen the insert yet, choose it before you fix the size.
- Write the result as internal length x width x depth, and say the word internal on the quote.
- Decide the depth range you want the lid to cover, then pick full, partial or tray and lid to match.
Board, print and ordering
Telescoping boxes are made either as a rigid two piece box, wrapped in printed paper over a greyboard core, or as a corrugated two piece shipper. Rigid gives a heavier hand feel and a crisp edge. Corrugated gives stacking strength and a lower shipped weight. Both take the same internal dimension logic.
Minimum order is 100 boxes, and pricing starts from about $0.48 per unit at bulk volumes, confirmed on your written quote. The die and plates, the design support, US shipping and a digital proof before anything prints are included. Production runs in three lanes: rush pairs expedited production with air freight, standard ships by air, and cost saver ships by sea. The floor is from about 7 business days, plus 2 to 5 for delivery, with specialty imported items running up to about 12 weeks. Two plants make the work, West Chicago in the US and Guangzhou in China.
If you want a rigid lid and base, the two piece boxes page is where to order, and rigid gift boxes covers the wrapped presentation version. Send your product dimensions, your intended insert and the depth range you need to request a quote, and the dieline comes back drawn to your internal size rather than to a stock one.
