A single manufacturer supplies insulating quilts for insertion into walls in new construction projects where both wall thinness and thermal insulation are important. These projects include laboratories inside office buildings and saunas inside commercial gyms. The quilts are a market for Jacobs' foam chemical.

The quilt manufacturer uses a reorder point policy where 250 units are purchased whenever its inventory drops to a predetermined level. So although orders are always for 250 units, orders arrive randomly. Demand started on day 640 and was stable by day 670. Long-run average demand is not seasonal and is not trending either upward or downward.