[SHADOW HOUSE NUMBER]: When installing this house digitally, keeping the gap between it and the front creates a shadow effect, which is more noticeable under the corridor lights and sunlight, creating your unique door plate. [LARGE NUMBERS SIZE]: 1pc x number 4: 5 x2.95 inch(12.7 x 7.5cm), thickness: 0.51 inch(1.3cm), 3pcs x nail kit. [DURABLE WATERPROOF MATERIAL]: This mailbox number is made of high-quality alloy, durable and sturdy, with a suspended design and a matte texture, waterproof and suitable for outdoor use. [INSTALLATION STEPS]: 1. Fix the template on the wall with adhesive tape. 2. Use a drill gun to drill out two 3cm deep holes according. 3. Screw the screws into the holes to fix. 4. Into the wall with the rubber hammer. [WIDELY USED]: Address numbers are suitable for the smoothest surfaces such as walls and wood, and can also be pasted on metal and glass. They can be widely used for door numbers, email numbers, mailbox numbers, house address numbers, and hotel door decoration.