People can buy 911 house number signs from companies such as Walmart and Amazon.com. The signs are also available for purchase online at SafetySign.com, Pride911signs.com and 911signs.com. The signs assist fire departments, police departments and emergency medical services in finding houses more easily.
Many 911 signs allow for horizontal or vertical display and reflect house numbers at night. The number should be visible from all directions. House signs should be near the front door, within the radius of the porch light. Mailboxes need to display the number on both sides. People must ensure that trees, bushes and other debris do not block visibility of the number.