Springless
Sectional Doors
No springs. No center supports. Floor-level maintenance. Built in Canada by SDI for years of high-speed, trouble-free operation.
High Speed
Fast Cycle Times
Engineered for high-cycle environments like car washes, service centers, and busy loading bays where speed matters.
No Springs
Zero Spring Costs
Springless design eliminates spring replacement costs, center mounting supports, and the safety hazards of torsion springs.
Floor Level
Easy Maintenance
All limit and door level adjustments are made from the floor — no lift, no ladder, no climbing required.
The Springless Advantage
Traditional sectional doors rely on torsion springs that wear out, break, and require costly replacement. SDI's springless design eliminates the spring entirely — delivering a door system with lower lifetime cost, safer operation, and simpler maintenance.
Traditional Doors
- Springs wear out and break
- Center supports required
- Maintenance needs lift access
- Spring replacement costs
- Safety risk from spring failure
SDI Springless
- No springs to replace — ever
- No center supports needed
- All adjustments from floor level
- Lower lifetime maintenance cost
- Safer for technicians
All components proven through many years of trouble-free high cycle applications.
Built for Performance
Every component is proven through years of trouble-free high-cycle applications.
High Speed Operation
Maximize throughput with fast open/close cycles that keep traffic moving and reduce energy loss.
Low Maintenance Costs
No springs to replace — the single biggest maintenance expense on standard sectional doors is eliminated.
Energy Efficient
Fast cycle speeds minimize open time, reducing heating and cooling loss in climate-controlled environments.
Floor-Level Service
Limit switches and door adjustments are accessible from the floor without a lift or ladder.
No Center Supports
Springless design means no center mounting supports needed — simplifying installation and maximizing clearance.
Versatile Panel Options
Wide range of door face options to match the exterior of any project — from insulated panels to full-vision glass.
Standard Package
Every SDI springless sectional door comes with everything needed for a complete, safe, high-performance installation.
Safedrive Operator
Reliable, proven motor system for consistent high-cycle performance
UL325 Control Panel
UL325 approved safety control panel with full diagnostic capabilities
Photoreflective Photoeye
UL325 approved safety sensor prevents closing on obstructions
High Cycle Rollers
Engineered for extended service life in demanding applications
Barrel Assembly
Heavy-duty barrel for smooth, reliable curtain winding
Emergency Chain Hoist
Built-in manual override for power outage or emergency operation
Wireless Safety Edge
Air wave safety edge — no wiring to the bottom bar
Car Wash Package
Purpose-built for the harsh, wet, chemically-aggressive environment of car wash tunnels. Every component is upgraded for corrosion resistance and reliable operation in high-moisture conditions.
Stainless Steel Control Panel
Corrosion-resistant panel built for high-moisture environments
Thru-Beam Car Wash Photocell
Specialized sensor designed for wet, steamy conditions
Drive with Covered Brake
Sealed brake system protected from water and chemical exposure
Powdercoated Components
Track, hardware, and barrel all powdercoated for corrosion resistance
Where They Excel
Car Washes
High-speed, corrosion-resistant operation in wet, chemical-heavy environments
Loading Docks
Fast cycle times minimize energy loss and keep goods moving efficiently
Service Centers
Busy bays demand reliable, high-cycle doors that won't fail at peak hours
Distribution
High-traffic shipping and receiving where every second of throughput matters
Manufacturing
Production environments with strict environmental and cycle-time requirements
Parking Facilities
Secure, fast access for high-volume parking structures and underground lots
Professional Installation
As an authorized SDI dealer, Nimble Door Company provides complete turnkey installation of springless sectional systems across Western Canada. From specification and engineering to installation and ongoing maintenance.
SDI's local Canadian manufacturing and inventory ensure parts and service availability to minimize downtime and repair costs.
Download BrochureWhy Choose Us
Authorized SDI Dealer
Factory-trained installation and service
Canadian Made Product
Manufactured in Mississauga, Ontario
Fast Parts Availability
Local manufacturing = local inventory
Ongoing Support
Maintenance programs and emergency service
Western Canada Ready
Engineered for harsh winters and heavy use
Recent Installations
Professional SDI springless sectional door installations across commercial and industrial properties.
