Home Products FL-400 Flush Aluminum Commercial Doors FL-400 FL-400 Flush Aluminum Commercial Doors Blast Test Category 1: Undamaged Tubular Extruded, No Delamination Unlimited Custom Design The FL-400 in its inception, was fundamental in our belief to provide the end user with the best commercial doors on the market. This unique flush plank door, created over forty years ago, would one day pass category 1 blast tests undamaged. These doors were created with an aluminum extrusion interlock every four inches. Aluminum extrusions have 4 times the yield and tensile strength of aluminum sheets allowing these doors to be built in custom sizes. In fact, these doors have been built up to 20’ tall in some of the most grueling environments in the world. These commercial doors are structurally rigid yet flexible in design. A rough and tough door design used on the front of office facilities and schools. The glazing capabilities, along with no need for through-bolting hardware, allow this door to be installed anywhere on a building façade. 1 2 3 4 5 6 Construction Details Options Fluted Smooth Fluted Plank Design Strength beyond compare Closure Plates Reinforcement, 1/4" closure wall To spread great values, build quality products, and inspire innovation by creating value for our team and customers. The only way to enter. Flush Entrances FL-400 FL-400 Flush Aluminum Commercial Doors FLT-400 ThermaPlank™ FLT-400 Heavy Duty Commercial Entry Doors Stile & Rail Entrances WST-500 WST-500 Thermal Commercial Storefront Doors WS-500 WS-500 Commercial Glass Entry Doors MS-400 MS-400 Medium Stile and Rail Door Entrances NS-250 NS-250 Narrow Stile Aluminum Door Entrances Storefront E4500 4 ½” Interior Storefront System T14000 4 ½” Thermal Aluminum Storefront Framing Systems T14000-IO 4 ½” Thermal Inside/Outside Storefront windows T14650 6 ½” Thermal Commercial Storefront Windows System Curtainwall CW2000 2” Face Curtain Wall System CW2500 2 ½” Face Aluminum Curtain Wall Framing Systems Explore Home Products Downloads Inspiration Contact Us Legal Terms Privacy Contact Us 1770 Mayflower Rd. Niles, Michigan 49120 Business: (269) 697-8340 Toll-Free: (800) 806-DOOR info@crossaluminum.com © 2021, Cross Aluminum. All Rights Reserved.