All orders are shipped via ground shipping. If an order has standard items and custom items (such as an amplifier and a custom subwoofer box), the standard items will be shipped first, then the enclosure will ship when it has been completed. Custom enclosures may take up to 10-15 business days to complete and ship. Occasionally, circumstances arise that may delay shipment of your order. If this occurs, you will be notified of the delay via email. If available, a tracking number will be provided once the order has shipped.