Reflective House Number Plaque for Straight Curbs Reflective Numbers: Provides the same nightime visibility as reflective signs on interstates. UV Protection: Long-lasting, UV protection keeps your numbers looking great for many years to come. 3" Numbers: 911 services usually require 3" numbers on your house, you can have them at the curb now Form-Fitted for Straight Curbs: Unique design provides great curb appeal. Your plaque ships to you with your order's shipping address numbers unless you email us otherwise.