Fort fort protherma 51mm wide rib vertical ral colours steel side hinged garage doors

Bold Design Meets Superior Thermal Performance

The Fort ProTherma 51mm Wide Rib Vertical steel side-hinged garage door delivers commanding architectural presence combined with exceptional thermal insulation performance. Featuring pronounced wide vertical ribbing across the door panels, this design creates a distinctive, contemporary aesthetic that makes a strong statement on modern UK properties. The door is available in an extensive range of RAL colours to perfectly match your home's exterior colour scheme.

The wide vertical rib profile creates substantial visual impact through bold, defined lines. The pronounced ribbing running the full height of each door leaf casts deeper shadows and provides dramatic architectural character, whilst maintaining the elegant vertical orientation that draws the eye upward. The wider ribs create interesting shadow play throughout the day as light angles change, adding dynamic visual interest to your garage frontage.

Advanced 51mm Insulated Construction

Manufactured using Fort's premium ProTherma 51mm insulated panel system, this door combines a robust 51mm double-skinned outer aluminium frame profile with steel insulated panel inserts. The advanced polyisocyanurate (PIR) thermal core delivers industry-leading insulation performance with a U-value of 1.4W/m²K, making this door ideal for heated garages, converted garage spaces, or any application where thermal efficiency is paramount. The wide vertical rib profile adds significant structural rigidity whilst creating bold architectural character. The thick panels offer superior acoustic insulation whilst the robust construction delivers enhanced security.

Security Features and Hardware

The Fort ProTherma 51mm range incorporates advanced security features as standard. A 3-point locking system with mortice lock and twin hook bolts provides secure multi-point engagement, whilst the 3-star anti-snap euro profile cylinder resists attacks. Concealed shoot bolts on the inactive leaf prevent forced opening. The robust lever handle features internal thumb-turn operation, with door stays fitted as standard to prevent uncontrolled movement. Optional smart access systems with fingerprint recognition and smartphone app control are available.

Configuration and Finish Options

Available in 50/50 split or 1/3 - 2/3 split configurations. Choose from 32 powder-coated RAL colours including Pure White (RAL 9010) and Anthracite Grey (RAL 7016). The high-quality powder coating is applied to both door leaves and steel sub-frame. Double weather seals and a thermally broken threshold ensure maximum thermal performance. External hinges are 3D adjustable for perfect alignment. Supplied made-to-measure as pre-assembled doorsets for straightforward installation. Manufactured in the UK with a 10-year warranty.

Summary of main door features:

• Door Type: Side-hinged, dual-leaf opening
• Material: Insulated steel and aluminium profile panels
• Insulation: High-density core for thermal efficiency
• Frame: Reinforced outer sub fixing frame with heavy-duty hinges
• Locking System: Multi-point locking for enhanced security
• Finish Options: Wide range of RAL colours as standard or on request
• Operation: Manual outward opening
• Weather Seals: Integrated seals for improved protection
• Ideal For: Garages requiring frequent pedestrian access, security and energy efficiency.

Choose from 32 standard colours which also includes the outer fixing sub frame. 3 colours are standard with no charge and the optional 29 other colours have a small additional charge.

Optional RAL special colours are always available on request.

9 different lever handle finishes are available at the same price or choose a chrome finished smart lock system at extra cost allowing finger print recognition for entry. This system is in a chrome finish as standard.

Roller bar locking and fixed straight vertical pull bars in stainless steel are available externally in 1200mm or 1600mm lengths at extra cost.

50:50 door split
1/3rd and 2/3rd split optional with limited maximum width sizes of 2438mm
Minimum width for doors is 1500mm overall
Minimum height for doors is 1500mm overall

Doors open outwards as standard but on request you can have the door opening inwards at extra cost in manufacturing. The seals will not perform as well with the doors opening inwards.

Included as standard:

• Door stays operated from inside
• 3 star anti snap locking
• 3D adjustable hinges
• Outer fixing sub frame in aluminium box section with multiple seals
• Concealed shoot bolts top and bottom of inactive door leaf
• 3 point mortice and twin hook locking

Standard Free of Charge Colours: