
Commercial Hand Chain solid Curve

At Town Gate Co., we provide high-quality commercial roll-up doors designed to deliver security, durability, and smooth operation for any type of business. Whether you run a warehouse, retail store, loading dock, or industrial facility, our roll-up doors are built to withstand heavy daily use while keeping your property safe.
With custom sizes, materials, and finishes, we ensure that your door not only meets safety standards but also matches the look and functionality your business needs
Specifications
Door Construction
Curtain
- Slat Profile: 4″ Solid curved galvanized steel slats, cast iron end locks is installed on each alternate slat to reduce lateral movement and deflection control.
- Material spec: From 22 ga up to 16 ga galvanized steel
- Finish: Galvanized or customizable powder-coat colors.
- Options: 3″ Solid “C” “W” or “flat”, punched, perforated and grilled. Factory installed end locks or wind locks.
Bottom Bar
- Standard design includes double-angle galvanized steel bar (2″ x 2″ x 1/8″) extends into the guide tracks.
- Material spec: 2″ x 2″ x 1/8″ Galvanized angle.
- Optional finish: Galvanized or powder coating to match the curtain
Brackets
- Fabricated from 3/16 thick carbon steel plate and increase thickness depending on weight load with ball bearings on the drive side for smooth rotation and protect drive shaft from wear.
- Finish Options: Galvanized or customizable powder-coat colors
- Optional: Stop-lock bearing to prevent free fall in the event of operator failure or spring failure.
Guides
- Material: Built from heavy-duty structural steel angles with a minimum thickness of 3/16”, manufactured in compliance with ASTM A36 standards. Guides are bolted together using ⅜” fasteners in 1-¼” slotted connections, spaced at a maximum of 24” on center for secure installation. A precise 1” channel spacing is engineered to provide smooth and reliable curtain movement during daily operation. For enhanced performance, Town Gate includes a standard vinyl clip-on weather seal to improve durability and reduce air infiltration.
- Shape: “E” shape, “F” shape and “Z” shape.
- Finish Options: Galvanized or customizable powder-coat colors.
Counterbalance Assembly
A precision-balanced shaft limits deflection to 0.03″ per foot of door width. Torsion springs are helical-type, designed with a 25% overload factor. Springs are grease-packed and mounted on a cold-rolled steel inner shaft.
Features: External spring tension adjustment and sealed ball bearings to reduce shaft wear.
Cycle life: From 20,000 up to 400,000 cycles depending on application.
Hood / Coil Housing
- Standard hood is formed from 22-gauge galvanized steel in a hexagonal shape, fitting the contour of the brackets. Equipped with a neoprene air baffle to prevent air filtration.
- Optional shapes: Square or round.
- Finish: Galvanized or customizable powder-coat colors.
Locking Devices
Choose from multiple locking options depending on operation type:
Slide lock on bottom bar (manual models).
Cylinder locks.
Pin locks with guide hasps.
Uses & Applications
Applications
Town Gate’s commercial roll-up doors with solid curved slats and manual chain hoist are specifically engineered for retail and commercial settings where manual operation, reliability, and visual integration are critical.
Ideal for:
Car shop, Tool Storage Rooms, Parking Garages, Warehouses, Convenience Stores, Mini Markets, Truck Terminals, Ticket Booths, Government Facilities and stadiums.
Functional Benefits
Locking Options
Standard with pin locks on both ends for padlocks. Optional slide locks can be added for high-security applications.
Durable Commercial-Grade Curtain
4” interlocking curved slats, built from 22-gauge up to 16-gauge galvanized steel, reinforced with end lock or wind locks. Designed to resist forced entry, heavy wind loads and wear from daily commercial use. Optional punched, perforated and grilles
Chain Hoist Operation
Manual lift via hand chain system—perfect for businesses needing secure access without relying on electricity.
Motor upgrade options available
Custom Finish Options
Choose from our Powder coating colors to match your brand or facility aesthetic.
High-Quality Hardware
Equipped with 1/4 steel brackets (16” hex shape or round shape), roll-formed 14-gauge side guides or structural angle guides and galvanized hood for superior durability.
Town Gate Advantage and Benefit
Optimized for Commercial Demands: Durable construction designed for constant use in high-traffic areas.1
Low Friction Operation: Mechanical layout engineered to reduce wear and ensure smooth manual operation.
Space-Saving Design: Compact slat roll-up reduces overhead obstruction and maintains clean sightlines.
Made-to-Order Precision: Each unit is custom fabricated to your exact opening and commercial use case.
Proven Durability: Backed by over 48 years of combined experience in commercial door manufacturing.
Warranty Included: 1-year coverage on materials and craftsmanship with extended options available.
Built to Commercial Standards: Manufactured under strict quality control protocols for long-term reliability.
Installation Overview
Town Gate Commercial Roll-Up Doors are designed for clean, fast installation in commercial storefronts, masonry walls, or framed structures.
Optional add-ons: Town Gate can provide framing, access doors, metalwork, and finish painting as needed.
Note: Electrical wiring, conduit, fuses, and switches should be coordinated by licensed electricians or the GC on-site.
Operation
- Hand Chain Operation:
Town Gate Co. offers a reliable hand chain option designed for storefronts and other commercial settings. Ideal for big roll up doors, this operation method provides a simple and durable solution for everyday use, requiring no electricity—perfect for locations where power is limited or not needed. - Town Gate Motor Operation
For added convenience, Town Gate offers a variety of Motors operator as an optional upgrade. Classified and built for this kind of doors, this system provides smooth, automated performance. Commonly used in storefronts, warehouses, and open-air commercial spaces, the motorized operation can be paired with push-button, key switch, remote control, keypad and internet App for secure and user-friendly access.

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