German phrase
Welche Maximalmaße darf ~ haben?
Meaning
What are the maximum dimensions allowed for ___?
When to use it
It asks about size limits. Use it when checking whether an item meets the rules.
Example dialogue
Welche Maximalmaße darf das Handgepäck haben?
What are the maximum dimensions allowed for hand luggage?
Erlaubt sind 55 × 40 × 23 cm.
The permitted dimensions are 55 x 40 x 23 cm.