qualifier number + unit a measured amount

maximum handling time

The upper bound of the handling window under a shipping rate — the slowest time between order placement and dispatch. A qualifier of `shipping_rate` (cardinality one), a numeral with a time unit. Paired with `handling_time_min`; a fixed time sets min=max. The real Google Merchant min_handling_time/max_handling_time pair, every feed carries it as a range.

Maximum handling time is a measured figure, given in seconds or minutes.

It is a qualifier of shipping rate — it has meaning only inside a shipping rate statement, one per statement, never on its own. It belongs with shipping rate to fulfilment — one facet of a product.

It is answered inside every shipping rate statement, not as a standalone question on a kind.

answered with: №number + unit — a number paired with a unit drawn from an exhaustive unit vocabulary.
value domain: Time units — the vocabulary its answers are drawn from.
qualifier of: shipping rate — one per statement — it has meaning only inside that host's statement.

Answered inside every shipping rate statement — not a standalone slot on any kind.