Kason's 1826 Intelli-Vent Pressure Relief Port is one of four ventilation products within the Intelli-Vent family. The 1826 model is uniquely designed to improve energy efficiency, simplify installation, and provide 60% faster pressure relief. OEM's can reduce the number of SKU's needed for a walk-in cooler or freezer build by usign this product, as it combines a PRP, LED safety light and junction box with optional motion sensor all into a single solution. Since 1926, the Kason® brand has represented dependability and excellence. We proudly manufacture products in the U.S.A. at our Newnan, Georgia headquarters. Kason designs innovative solutions backed by robust quality management to ensure exceptional products. From high-quality hinges, handles and LED lights to vinyl curtains, a broad range of fabrication supplies and more, you can depend on Kason for solutions that help businesses operate more effectively and efficiently. Always demand the best — demand genuine Kason products. Check out all of the products Kason has to offer at http://www.kasonind.com/. It's Better with Kason.