Performance Counts When it comes to performance, Norton model 888 delivers. With a wind rating of over 160 mph on 9'wide openings, these are seriously strong doors. The doors are packed with features for long life such as the EP3 coated spring,which resists rust and requires no lubrication. An easy to use ratcheting tension wheel at each spring makes it easy to adjust spring tension, and extra wide felt strips on the back of the door provide smooth operation for decades. For even more demanding environments, the door is available in a smooth operating windlock version . Designed for both interior and exterior applications, Norton model 888 is ideally suited to self- storage, yard barn and many more applications. The pre-installed Spacegaurd latch accepts two padlocks and an cylinder latch lock. The doors are available in wide variety of standard colors all at one great price. Norton doors are manufactured in the United States in a modern, highly automated facility. Our advanced manufacturing techniques provide consistent quality with a high degree of efficiency. Norton takes customer service seriously. We are 100% employee-owned. Every employee has a vested interest in serving our customers. Whether you are interacting with one of our resellers or directly with us, you'll receive prompt responses and knowledgeable assistance.