Turning challenges into triumphs, Cookson’s relentless pursuit of innovation is found across their Extreme® Series line—defined by speed, durability, and maintenance-free performance. Made for demanding applications, purposeful designs can strengthen security, streamline the flow of traffic or goods, and boost energy efficiency. Cookson’s high-performance doors and grilles feature fast and precise operation, springless designs, heavy-duty construction and components, enhanced safety features, advanced control systems, and a compact fit for small openings with minimal headroom requirements. The Extreme 300 Series High-Performance Rolling Grille is a virtually maintenance-free option that operates up to three times faster than standard overhead coiling grilles. Extreme MicroCoil Grille The Extreme MicroCoil® Grille requires nearly 50 percent less headroom than traditional security grilles. Its patented nested link system reduces noise and vibrations, making it one of the smoothest operating coiling grilles on the market. Extreme Series Sectional Door This model operates at an average of 24 inches per second opening speed, three times* faster than a traditional sectional door. * When compared to a 10-foot by 10-foot door with a Logic 5.0™ operator set to an average of 8 inches per second. Extreme 300 Series Door Available in both insulated and uninsulated models, the Extreme 300 Series Door features 300,000 maintenance-free cycles. Insulated models carry an air leakage rating of less than 0.3 cubic feet per minute per square foot, surpassing ASHRAE® 90.1, 2015, IECC®, and California’s Title 24 air infiltration requirements.