For over 40 years, MacLean Highline Access Boxes has offered the industry's broadest product portfolio, including turf irrigation, utility meter, roadway valve and curb service boxes. Our concern for the environment is reflected in the use of corrosion-proof Superflexon, a recycled material made for dependable strength and long product life. Highline Access Boxes roadway valve and curb service boxes contain Polyiron, making them easy to locate magnetically. We are dedicated to ongoing product development and outstanding customer service, from order placement to delivery.