DKS 16-Gauge Steel Stiffened Doors – 1400 Series

DKS 1400 Series 16-Gauge Galvanized Steel Stiffened Doors Our 1400 Series flush doors combine 16-gauge galvanized steel construction with hat-shaped vertical steel stiffeners and fiberglass-filled cavities. Seamless filled edges, reinforced hardware locations, and a factory-applied grey epoxy primer make this series a practical choice for coordinated commercial door openings. Our handed design has a beveled lock edge and a square hinge edge. Practical Uses Commercial openings: Choose our 1400 Series where the door schedule calls for 16-gauge galvanized steel stiffened construction. Replacement projects: Match the door size, hand, and hardware preparation to the existing frame and approved hardware schedule. Double egress openings: Our 1400 Series is approved for double egress use; coordinate the complete opening and hardware configuration before ordering. Everyday example: For a commercial corridor renovation, select the required hand and lock preparation before ordering, then coordinate the hinges, closer, and frame so your new steel stiffened door fits the opening and works with the planned hardware. Fit and Preparation Choose RH – Right Hand or LH – Left Hand with C – Cylindrical Lock Prep, MB – Mortise Blank, or BR – Blank Reinforced for Surface Mounted Hardware. Our June 2025 product guide covers stock 3070 configurations. Confirm the exact size, preparation, and availability with us before ordering. Size coordination: Verify door dimensions, frame opening, finished floor, threshold, and undercut before ordering. Handing: Our 1400 Series is handed. Match the swing, beveled lock side, and square hinge side to the opening. C: Cylindrical lock preparation. MB: Mortise blank preparation. BR: Blank reinforced for surface-mounted hardware. Hardware coordination: Match hinge locations, lock templates, strike preparation, and closer mounting to the approved hardware schedule. Not sure which hand to choose? View our door and frame handing diagram (PDF) to compare right-hand, left-hand, and reverse-hand swings before ordering. Hinge Locations by Door Size Our Door Hinge Cross Reference Chart provides the following hinge-location dimensions for a standard DKS 3070 door. Dimensions are in inches, referenced from the top of the door as illustrated in our chart. A, B, and C identify successive hinge locations. Match the drawing's measurement points before comparing an existing door or frame. 3070: A = 7-3/8 inches; B = 39-5/16 inches; C = 71-1/4 inches. View our hardware-location reference drawing (PDF). Coordinate lock locations with the selected preparation and approved hardware template; do not substitute hinge measurements for lock centerlines. Installation Guidance Install our doors only in a frame that is plumb, level, square, securely anchored, and correctly sized. Support the door while hanging it, use the specified hinge fasteners, and check for a free swing and proper latch engagement before adjusting the closer. Protect the door from moisture and jobsite damage, and keep labels visible. For labeled openings, verify the supplied door label and compatible frame and hardware, and follow our installation instructions before making field modifications. Problems It Helps Address Steel stiffened construction needs: Our hat-shaped vertical stiffeners on 6-inch centers provide the specified internal reinforcement. Unfilled door cavities: Fiberglass insulation fills the cavities between stiffeners. Hardware mounting needs: Dedicated hinge, lock, and closer reinforcements provide prepared mounting locations for compatible hardware. Ordering mismatches: Our handing and lock preparation choices let you coordinate the door with the intended opening when the correct configuration is selected. Product Details Series: DKS 1400 Series steel stiffened flush door. Face material: 16-gauge galvanized steel. Edges: Seamless filled edges; beveled strike / lock edge and square hinge edge. Internal stiffeners: 22-gauge hat-shaped vertical stiffeners on 6-inch centers. Insulation: Fiberglass-filled cavities; insulation is 1-5/8 inches thick with a density of 1.5 lb/cu. ft. Handing: Handed design. Closer reinforcement: 12-gauge steel. Hinge reinforcement: 7-gauge, standard/heavy duty. Lock reinforcement: 14-gauge steel. Top cap: 16-gauge. Bottom cap: 16-gauge inverted bottom cap. Standard preparation families: 161, Fed 86 edge, and panic bar reinforcement, subject to the selected configuration. Double egress: Approved for double egress use. Fire and smoke listing: Our 1400 Series specifications include WHI/ITS ratings up to 3 hours, positive pressure, and “S” smoke. Verify the rating and label supplied for your exact opening configuration. Standards: Meets or exceeds ANSI 250.8. Available Finish Our factory-applied finish is baked-on grey two-part epoxy primer. Coordinate any finish painting with our painting instructions and your project requirements. Manufacturer Documents Our 1400 Series product information Our 1400 Series specification sheet (PDF) Our 1400 Series product number and preparation guide (PDF) Our door hinge cross reference chart (PDF) Our steel door installation instructions (PDF) Shipping Information ⚠ This product ships via LTL (Less Than Truckload) freight due to its size and weight. Shipping costs are not calculated at checkout. After placing your order, a member of our team will contact you with a freight quote for your approval before shipment. For shipping inquiries prior to ordering, please contact us.