Floor-Mounted Adjustable Double Acting Spring Hinge (Commercial Grade) Designed for commercial and heavy-duty doors that must swing in both directions and automatically return to center.This floor-mounted hinge is intended for applications where a concealed, high-capacity solution is required and surface-mounted or overhead hardware is not suitable. ⚠️ Not recommended for most residential or light-duty doors.If you are unsure whether your door requires a floor-mounted system, review the checklist below or contact our support team before ordering. Is This the Right Hinge for Your Door? Use this quick checklist to confirm compatibility: ✔ Door must swing both directions ✔ Door weight does not exceed 90 lbs ✔ Door thickness is between 1-3/8" and 1-3/4" ✔ Floor can be cut or recessed for installation ✔ Commercial, architectural, or heavy-duty application ✖ Not intended for lightweight residential interior doors If any of these are unclear, we strongly recommend speaking with a hardware specialist before purchasing. Specifications at a Glance Door Operation: Double Acting (Swings Both Ways) Mounting Style: Floor Mounted Spring Action: Adjustable Tension Door Weight Capacity: Up to 90 lbs Door Thickness: 1-3/8" to 1-3/4" Handing: Non-Handed Hold Open: Holds open at 90° Bearing Type: Ball Bearing Material: Solid Brass Installation: Professional Installation Recommended Floor Preparation: Required Visibility: Concealed (Below Floor Surface) Product Overview This floor-mounted adjustable double acting spring hinge is engineered for demanding commercial environments where durability, control, and a clean appearance are essential. By mounting below the floor surface, the hinge remains concealed while providing controlled, bi-directional door movement and reliable return-to-center functionality. Adjustable spring tension allows installers to fine-tune door resistance and closing force after installation. The ball-bearing design promotes smooth operation and long-term performance in high-traffic environments such as restaurants, commercial interiors, and architectural door applications. Because this hinge requires precise alignment and floor preparation, it is best suited for experienced installers and professional installations. Available Finishes This hinge is available in the following finishes: Polished Brass Satin Brass Oil Rubbed Bronze Satin Nickel Antique Nickel Polished Chrome Primed Finish for Painting Solid Brass Detailed Dimensions & Technical Specifications Spring Hinge Length: 9-1/4" Cover Plate Length: 9-3/4" Cover Plate Height: 2-5/8" Door Weight Capacity: 90 lbs Door Thickness Range: 1-3/8" to 1-3/4" Hinge Type: Ball Bearing Swing: Double-Acting (Both Directions) Hold-Open Position: 85 Degrees Handing: Non-Handed Material: Solid Brass Spring: Adjustable Tension Deltana installation instructions and detailed specs. When to Choose a Floor-Mounted Double Acting Hinge This hinge is a good choice when: The door is heavy or wide and sees frequent use A concealed hardware appearance is required Overhead closers are not allowed or desired The application has architectural or code-driven requirements When to Consider an Alternative You may want to consider surface-mounted double acting hinges or pivot hinge systems if: The door is light to medium weight You are retrofitting an existing opening Faster or lower-cost installation is preferred (Links to recommended alternatives should appear here.) Installation & Setup (Read Before Ordering) What installation involves: Floor recess or cut required Precise vertical and horizontal alignment Spring tension adjustment after installation Recommended installer: Commercial door installers Experienced contractors Facilities or maintenance teams Not recommended for: First-time DIY installations Lightweight or hollow-core doors Please review installation documentation and diagrams prior to purchase. Need Help Choosing? Not sure if this hinge is right for your application? 📞 Call or chat with a hardware specialist 📐 Get help confirming door weight and door thickness 🔁 Avoid costly returns by verifying specifications before ordering
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