• This is only for buyers to pay an extra shipping fee/price difference.
• Kindly remind, this item is not a product.
• Don't order this item without purchasing other products in our store.

This link for you to pay the price difference in the following situations:
1. When you already have placed an order, but you want to change it to a larger size, change jamb size, or upgrade to thermal break door.
2. When you request expedited shipping service for your order.