Delivery windows are wide to give your movers the option to coordinate other deliveries in the same route. It is there to account for anything that may happen such as weather, vehicular issues, and for the drivers to comply with the federal regulations in regards to driving duration during a single shift. Please keep in mind, the less trip the movers make in the same direction, the more cost-effective it is for the movers. This is how long distance movers can provide affordable pricing!