Resident Parking Only Red Numbered Sign | 8 x 12 Aluminum Outdoor Parking Sign Numbered 1 - 20. Resident Parking Only Numbered signs are printed on a quality aluminum sign, one sided. Printed on one side. Back side of sign is blank aluminum. Signs will go the distance and last because they are UV Coated. Letters will not peal off or crack as the sign text is printed then baked into the surface of your sign. Sign will come with holes punched top and bottom so you can attach your custom sign where needed.