ErgoEquip is unable to deliver to PO Boxes and we do not deliver over weekends. Depending on your location, delivery can take 1- 5 days. This is dependent on the availability of the product at the time of ordering. If we are out of stock or this product is on backorder then you will be notified of this and a new delivery date will be established. If you are ordering chairs the delivery times will vary depending on the supplier and their stock levels. Please contact to confirm your delivery time.