Convenient Arriba™ Twist System is a great choice when you need long-lasting freshness with minimal effort. Battery-free operation is an easy option and requires minimal maintenance. Simple, silent operation will not disturb patrons. Each refill provides odor control for up to 60 days. Works anywhere you need quality air care. Material(s): Plastic; Color(s): Gray; Depth: 2 7/8"; Height: 4 5/8".