InternalAluminum NT45Non-thermally Insulated Aluminum
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Slim sight lines and a smaller stacking space, ideal for internal and some external* solutions.

10 Year Manufacturers Warranty

10 Product Warranty
- Overview
NT45 Internal Aluminum - Features
Key Features as Standard - Security
Safety & Security Features - Threshold
NT45 Threshold Options - Performance
Weather & Thermal Efficiency - Specifications
Technical Details
Overview
The NT45 offers a lightweight solution and is ideal for use as an internal bi-fold door, room dividers, pool enclosures and garages as well as commercial and leisure applications (zoning areas etc).
The NT45 uses a non-thermally insulated profile so ordinarily it does not pass the strict building standards U-Value of 1.8 W/m2k which is required for an external door in the UK (for use in other non UK areas please check local building control legislation).
Although the slimline NT45 frame has a tighter stacking space and a lightweight feel compared to our standard products it doesn’t lose any of the benefits our standard frame offers.
Just as durable and strong and although used mainly for interior doors they are just as weather tight and secure.
The NT45 is custom made to your exacting requirements - meaning as a customer you get to specify; dimensions, product style, opening style, configuration, color, finish, hardware, thresholds, glass specification, glazing options, magnetic stops, ventilation and internal blinds.
A matching range of windows and doors are available to complement the NT45 bi-fold door.

Features
Key Features
- Available in any RAL, special color/texture, anodized color, or dual color option
- Available with or without external cill
- Buying direct from the manufacturer
- Child friendly/fitted with finger safe gaskets
- Choice of nine threshold (bottom track) options
- Contemporary modern appearance
- Dual running (top and bottom) rollers for even weight distribution
- Easy to operate - effortlessly smooth
- Finger safe gaskets - so no need to worry about fingers getting caught
- Hard wearing powder coated finish/resistant to scratching and denting
- Heavy duty corner connectors for increased strength, durability & rigidity
- Ideal for internal applications
- Inward and outward opening options
- Low threshold - zero trip hazard / ADA compliant
- Maintenance free, life expectancy of up to 25 years
- Matching range of windows and doors available
- Secure roller system, encapsulated within the track
- Security hinges - non surface mounted
- Slim flat handles for reduced stacking for when the doors are in use
- Slim sightline of just 130mm (60/5/5/60) - 5 1/8” (2 3/8” / 3/16” / 3/16” / 2 3/8”)
Functionality
- Corner posts can be incorporated to produce corner openings
- In-line out of sight track offering a practical functionality
- Marine treatment available for salt water environments
- Outlet Water escape
- Pull handle(s), to enable ease of operation and easy closing
- Resistant to scratching & denting
- Robust hardware using our own ‘Fold N Slide’ hardware range
- Steel wheels sealed bearings for maintenance free use
- Structurally strong - built to last
- Thicker, stronger aluminum profiles than most competitors
Security
- Five point multi-locking to access door with ‘Secured by Design’ (SBD) security cylinders
- Three star diamond ABS TS007 euro cylinders (anti-snap, anti-pick, anti-bump, anti-drill)
- Encapsulated rollers/running gear within the track, preventing it from being attacked
- End panels and access doors are fitted with high security locking mechanisms
- Hardened steel hook locks and dead bolts
- Internally glazed/beaded (option to upgrade to laminated impact glass)
- Option of key locking shoot-bolts are available for added security and external access
- Passed tests equivalent to a 300lb man trying to force entry
- Secure roller system, encapsulated within the track
- Security hinges (non face fixed) to prevent the pins from being removed and the hinge being forced from the door
- Shoot bolts - Top and bottom, locate directly into both top and bottom track
- Stronger/thicker (1.75mm) aluminum profile
Threshold Options
We currently offer four threshold options for the NT45 bi-fold door, with all options available as either inward or outward opening. But for the many, the most popular option is our flush threshold that blends two rooms seamlessly, which is especially useful for those with children, elderly or wheel chair users.
This slimline inline out of sight track system (which runs both top and bottom) is strong, safe and secure with all rollers / moving parts concealed within the aluminum profile extrusion itself. The aluminum track is weather-rated and with the moving parts being encapsulated within the track, there is no danger of doors lifting or bouncing off.

Flush track
Threshold option

Flush track with cill
Threshold option

Raised track
Threshold option

Raised track with cill
Threshold option
Performance
Weatherproof
- High performance seals/gaskets
- PVC Nitrile (synthetic rubber) gaskets, fitted as standard and used to seal the double glazed units into the panels and protect the door from water ingress
- PVC Nitrile seals between each panel (including top and bottom of the panel) to prevent water, wind and noise from entering the property
- Tested for water ingress, wind resistance and air permeability
- Weather head drip bar - moulded top profile
The main properties of PVC Nitrile is its outstanding heat, acoustic and thermal resistances.
Thermal efficiency
- Super Spacer® bars fitted as standard to glass units
- U-Value of complete unit from 1.42-1.8 W/m2k
Specifications
Frame width: | 60mm / 2⅜in |
Frame depth: | 45mm / 1¾in |
Maximum opening width: | 18300mm / 60ft |
Maximum opening height: | 3000mm / 10ft |
Panel height range (min/max): | 305mm / 1ft - 3000mm / 10ft |
Panel width range (min/max): | 305mm / 1ft - 1100mm / 3ft 7 1/2in |
Material: | Aluminum (thermally insulated) |
Stock colors: | 9016 Traffic White (Satin)/9005 Jet Black (Matt)/7016 Anthracite Grey (Matt) |
Optional colors: | Any RAL color/dual color/anodized or special finish |
U-Value of complete unit - W/m2k: | 1.42 - 1.83 |
U-Value of center pane (Glass) - W/m2k: | 0.92 |
U-Factor of complete unit - Btu/h·ft²·°F: | N/A |
Aluminum thickness: | 1.75mm / 1/16in |
Warranty (Product): | Up to 10 years |
Warranty (Manufacturers): | 10 years |
Glass units, standard: | 28mm / 1 ⅛in double glazed, low-E tempered |
Glass units, optional: | Triple glazing, laminated, anti-sun tinting (grey, bronze, green and blue), turtle glass, krypton gas |
Downloads
NT45 General Arrangement Drawings
Adobe Acrobat · 1.2MB
Installation Services
We offer a range of installation services