Weeks is the length of one billing cycle: the number of weeks of deliveries a customer pays for each time. A value of 1 is a weekly subscription, 4 is a four-week (monthly-style) subscription, and so on. It is required and must be greater than zero — otherwise saving fails with the message Week empty.

The value drives the renewal date: the next charge is due Weeks weeks after the last renewal date (adjusted to the Billing Renew Day and the buffer days), and the group "price per meal" figures shown to customers divide the price by Weeks × days × meals.