DKS 1400 Series 16-Gauge Steel Stiffened Flush Door - 3070

DKS 1400 Series 16-Gauge Galvanized Steel Stiffened Flush Doors Our 1400 Series flush doors combine 16-gauge galvanized steel faces with vertical steel stiffeners and fiberglass-filled cavities. Seamless filled edges provide a clean appearance, while reinforced hinge, lock, and closer locations support coordination with your commercial door hardware. This listing covers the handed 3070 configurations in our September 2026 price schedule. Practical Uses Commercial openings: Choose steel-stiffened construction when required by the approved door schedule. Replacement projects: Match the selected door to the existing frame dimensions, hand, and hardware locations. Labeled openings: Coordinate the exact supplied label with the frame, wall, hardware, and installation requirements. Everyday example: For a commercial renovation, check the opening schedule and frame before ordering. Select a 3070 door with the correct RH or LH hand and C, MB, or BR preparation, then confirm that the hinge and lock locations match the approved hardware templates. Fit and Preparation Listed size: 3070, nominal 3-foot by 7-foot opening designation. Confirm actual door dimensions, clearances, and undercut before ordering. Handed construction: The hinge edge is square and the lock edge is beveled. Select RH or LH to match the opening. C preparation: Cylindrical lock preparation. MB preparation: Mortise blank preparation; coordinate the required hardware template. BR preparation: Blank reinforced configuration; coordinate compatible hardware and mounting requirements. Other configurations: Other sizes and hardware locations require confirmation and are not included among this listing's priced variants. View our door and frame handing diagram (PDF) before selecting the hand. Confirm reverse-swing applications against the illustrated configuration. Hinge and Hardware Location CoordinationOur 1400 Series uses 7-gauge standard/heavy-duty hinge reinforcement, 14-gauge lock reinforcement, and 12-gauge closer reinforcement. Match the door's hinge locations, lock preparation, and closer mounting to the frame and approved templates before ordering.View our door hinge cross reference chart (PDF). Use the drawing reference points rather than treating door measurements as frame cutout dimensions. Installation GuidanceCheck that the frame is plumb, level, square, securely anchored, and compatible with the selected door hand and hardware. Support the door during hanging, install the specified fasteners, and verify clearances, free swing, and latch engagement before adjusting the closer. Follow our installation instructions and the approved project details. Keep labels visible and verify permitted field modifications for labeled openings. Problems It Helps Address Steel-stiffened construction requirements: Vertical internal stiffeners provide the construction specified for this series. Hardware mounting: Dedicated hinge, lock, and closer reinforcements support compatible hardware attachment. Visible edge seams: Seamless filled edges provide a clean finished appearance. Ordering mismatches: Selecting the correct hand and preparation helps coordinate the door with the existing opening. Product Details Series: DKS 1400 steel-stiffened flush door. Material: 16-gauge galvanized steel. Listed configurations: 3070, RH or LH, C, MB, or BR preparation. Edges: Seamless filled edges; beveled lock edge and square hinge edge. Stiffeners: 22-gauge hat-shaped vertical stiffeners on 6-inch centers. Insulation: Fiberglass-filled cavities, specified as 1-5/8 inches thick and 1.5 lb/cu ft. Hinge reinforcement: 7-gauge standard/heavy-duty design. Lock reinforcement: 14-gauge. Closer reinforcement: 12-gauge; included in the listed price. Caps: 16-gauge top cap and 16-gauge inverted bottom cap. Labels: The supplied price schedule includes WHI 3-hour positive-pressure and smoke labeling. Confirm the exact label and complete opening compatibility before ordering. Standards: ANSI 250.8. Confirm other required project standards with us. Available FinishOur factory-applied finish is baked-on grey two-part epoxy primer over galvanized steel. Confirm final finish-painting requirements before installation. Manufacturer Documents Our 1400 Series product information Our 1400 Series specification sheet (PDF) Our 1400 Series product guide (PDF) Our handing diagram (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.