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LCN 4000 Series Door Closers are surface-mounted door closers and are designed for commercial use. The door closer products covered in this EPD include LCN 4010 series, 4020 series and 4110 series. All values in this EPD are for the representative product in the LCN 4010 series, chosen due to it having the largest sales. The impacts of each product series mentioned are within ±10% of the representative product series’ impacts. The product is manufactured at Allegion’s Princeton, Illinois plant. Specifically the product is an average product from a single manufacturing plant.