What Is a Reorder Window in Distribution?
A reorder window is the span of days when a recurring customer is due to buy again, measured from the gap that normally sits between that account's own orders. In wholesale distribution it is the interval from one order to the next, and the point where a rep should call to catch the next one.
Why the window exists
Recurring accounts order on a rhythm, and the rhythm shows up in the dates. A restaurant's glove order lands about every three weeks. A property manager's can liner order lands about every month. Average the gaps between an account's past orders and you have an expected next-order date with a window of slack around it.
The window is built from order dates, not from anything happening inside the customer's building. A distributor cannot see what a customer has on site or how quickly they work through it. The record that does exist, and that every distributor already keeps, is when that account ordered and how much.
Where reps lose the window
On a small team, no one is tracking three hundred separate windows by hand. So the order comes in when the customer remembers, not when the pattern says it should, and sometimes it comes in to whoever the customer called first.
Catching the window means knowing, today, which accounts have entered theirs. That is a tracking problem, and order history already holds the answer.
An example
Lakeside Facility Supply delivers to a hospital whose nitrile glove orders have landed 24 days apart, give or take three, for the last two years. Day 22 is the start of the window. A rep who calls on day 22 looks proactive and keeps the order. A rep who calls on day 34 is talking to an account that is already ten days off its own pattern, and that is usually the week someone else's call lands first.
How wide is a window
The window is a range, not a single day. An account whose past orders landed almost exactly 30 days apart has a tight window of a day or two. An account whose gaps swing between 18 and 40 days has a wide one, and the flag should wait longer before it means anything. Reading order history sets both the center of the window and how much slack sits around it, so a rep knows not only when to call but how far off pattern the account already is.
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