Cover Plates are designed to quickly seal or conceal installation holes, instrument panel holes and other access holes where ready entry is not a requirement. Molded of high-impact, marine quality plastic, with ultraviolet inhibitors for prolonged service. Measuring 6.5" OD, Cover Plates conceal holes up to 5-1/8" (13cm) in diameter and mount with only four screws. Available in white or black, high-tech matte finish provides a rich looking installation.