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Sunflex SF50/SF50c HSW

Non-insulated aluminium/aluminium and timber composite moveable wall system

The SF50 HSW (horizontal moveable wall) is a non-insulated aluminium framed panel. The system can also be offered as the SF50c HSW benefiting from the natural beauty and warmth of real timber clad to the inside. Each panel when closed provides a continuous seal with its neighbouring panel ensuring greater structural stability and security, in addition to improved noise reduction and energy saving.

The SF50 HSW and SF50c HSW systems will enhance any project and can be applied easily into any building design, presenting many possibilities of organising space. Suitable for use as partition walls and for commercial applications, including pool enclosures, restaurants, churches, and shop fronts.

Key features

  • No bottom track for seamless floor finish.
  • Noise reduction and increased energy-saving.
  • Wide variety of design options and a full complement of doors and windows to suit.
  • Panels when opened can be stored in a separate parked position or stacking bay depending on individual requirements.
  • Large surface openings can be opened quickly and easily.
  • Low maintenance and fully guaranteed.

Versatility in design

The SF50 HSW and SF50c HSW offer unrivalled flexibility in design. Since the individual panels can be guided along a top rail to follow corners, curves or any irregular shape and can be used to create 100% clear openings as panels can be stacked into a separate parked position/bay depending on requirements.




Standard aluminium finishes

As standard we offer the choice of the five colours, silver anodised EV1; white RAL 9016; aluminium RAL 9006; grey aluminium RAL 9007; and anthracite grey RAL 7016,shown below. These colours offer our shortest lead times and are included within our quotations. Once we have prepared a quotation we are able to send colour samples for approval prior to progressing with your order.

Standard finishes for SF50 HSW and SF50c HSW by IDSystems


Special RAL colours

Over our standard range we are also able to offer the full RAL classic colour range. The range consists of over 200 colours which come in a matt, semi-gloss or full-gloss finish. The colours shown in the swatch will give an indication to the colour shade, however before progressing with an order we can provide aluminium samples for your approval.

RAL colours for SF50 HSW and SF50c HSW by IDSystems



RAL swatches for SF50 HSW and SF50c HSW by IDSystems

RAL swatches

RAL classic colour swatches can be purchased directly from us for £10.99 (including postage.

The full colour swatch is a great tool to allow you to choose the colour of your doors and windows to complement your internal decoration, external render, brickwork or other features within your project.

To order a RAL swatch you can make a card payment over the phone by calling us on 01603 408804. If you have narrowed down your choice we are able to send a colour sample for your approval when placing an order. 


Glass options

As standard all of our products will be fitted with glazing that exceeds Building Regulations Document N and L which govern safety and thermal efficiency. Over our standard glass there are many options for you to choose from including:

  • Laminated glass: Improved security and UV reduction preventing furniture fading.
  • Tinted anti-sun glass: Reducing solar gain, available in blue, green, grey or bronze.
  • Neutral anti-sun glass: Neutral in colour with reflective properties to reduce solar gain.
  • Self-cleaning glass: Reduces the need to clean the glass, very useful in roofs.
  • Obscure glass: Our satin deco is a stylish solution for areas requiring privacy.
  • Low-iron glass: Improves the light transmittance through glass while providing some free energy.




Manufacturer recommends panel widths do not exceed 1,200mm and a maximum height of up to 3,000mm. Heights greater than this can be achieved; please contact our technical department for advice.


The SF50 HSW profile is constructed from a strong light-weight aluminium extrusion. The minimal framework is offered as a square edge profile.

The SF50c HSW benefits from the strength and stability provided by aluminium. And combines it with the natural charm and beauty of timber to the inside, providing the very best of both worlds with a choice of timber profile shape to suit. All timber is sourced from sustainable forests. The standard timbers are Meranti (hardwood) and Nordic pine (knot-free softwood), while other timbers such as American white oak are available by special order.

Track options

The top suspended running track and rail can be concealed within the ceiling if required and is therefore entirely without the need of a bottom track. With only floor press stud sockets to accommodate the shootbolt locking rods, leaving an uninterrupted floor surface, bottom track option available if required.


The standard locking system offers a very high level of security, with a quick, smooth and easy operation. Each panel incorporates a bottom shootbolt mechanism which is concealed within the framework and operated by an internal flush handle. The shootbolt rods are manufactured in aluminium and linked by a corrosion resistant cam. They are capped with glass fibre reinforced polyamide cones to prevent any damage.

When closed each panel interlocks with its neighbouring panels by continuous gasket seals. All systems are internally glazed as standard for improved security.

Key locking can be integrated in the first opening panel or lead door with a five-lever profile cylinder. This can be fitted to either the inside only or both internally and externally as required, additional locks can be added at every handle point for higher security.

Weather stripping

The top and bottom seals consist of twin nylon brush piles giving an effective seal. The double gasket seals between the door panels are continuous and of superior quality (consisting of long lasting EPDM).

Operating system

A top running system, with an operating mechanism that consists of double horizontal stainless steel polyamide coated wheels, with maintenance free sealed ball bearings. Provide continued quiet, quick and easy, smooth operation and a long life.


The SF50 HSW system is available as standard in silver anodised EV1 or polyester powder coated to a semi-gloss finish white RAL 9016, aluminium RAL 9006, grey aluminium RAL 9007 or anthracite grey RAL 7016.

All handles are specially designed to complement the door system. Standard colours are white RAL 9016, black RAL 9011, aluminium RAL 9006, grey aluminium RAL 9007 or anthracite grey RAL 7016. Gaskets are in black.

Other RAL colours (over 200 RAL colours) are available. Even different colours to the inside and outside (dual colour) or different wood grain effects are available for a nominal charge. The RAL colours can be applied to the handles and hinges if required or alternatively there is a stainless steel handle option. In addition you can specify whether a matt, semi-gloss or full-gloss level of paint finish is required. A marine environment finish that is required to all systems within 5,000m of a shoreline or chemical swimming pool environment is also available.

The SF50c HSW in addition to the external aluminium finishes listed above, the natural character of wood to the inside is perfectly preserved by using Sikkens micro-porous water based wood stains (ie they contain no harmful solvents) in a variety of stain colours. As standard Sunflex timber door systems are fully finished which consists of one basecoat and two topcoats. Clear or oil finishes are available upon request.


The system can accommodate triple glazing. Our standard 28mm unit comprises of 4mm clear toughened glass to the inner pane x 16mm argon gas cavity x 4mm neutral antisun toughened glass, providing an enhanced thermal efficiency, with a centre pane U-Value of 1.0W/m2K to comply with Building Regulations for safety and thermal efficiency.

All sealed units are BS kite marked, manufactured to BS EN 12600 and BS 5713:1979 standards.

IDSystems offer a wide choice of glazing options, including internal venetian or pleated blinds which can be incorporated inside the glazed unit. These are very popular, especially on internally opening systems where curtains are not practical.

U-Values and heat losses

A U-Value is a calculation of the amount of heat lost through a building material. The calculation of U-Values can be quite complex as it is measured as the amount of heat loss through a 1m2 of material for every degree difference in temperature either side of the material. It is indicated in units of watts per square metre per degree Kelvin or W/m2K. The simplest way to approach U-Values is the lower the U-Value the more thermally efficient a product is.

A U-Value of a door or window is calculated by working out by determining the U-Value of the frame and the area of the glass and is then quoted as an overall U-Value. Beware that some manufacturers may just be providing the U-Value of the glass alone which gives a false overall value. All of our systems have been thermally simulated in accordance with CE standards to BS EN ISO 10077. 

Building Regulations approval will be required on all extensions and new builds to which we are able to provide CE data showing compliance. Any replacement works we are able to cover being a member of FENSA and a certificate would be provided on completion of our installation.

Single, double or triple glazing

Single glazing can be used for internal systems that do not have to meet Document L regulations regarding thermal efficiency. As standard all glass we use is toughened to comply with safety regulations. Single glazing is available in a variety of thicknesses, types and colours. The most popular options on our internal door systems are clear, partly frosted or obscure satin deco which lets through light but offers privacy.

Double glazing is a minimum requirement for external doors and windows. Our standard double glazed units, consists of a soft-coat Low-E (low emissivity) pane and an argon gas filled cavity which provides a centre pane U-Value of 1.2W/m2K. Over the standard we can provide super insulated double glazed units providing a centre pane U-Value of 1.0W/m2K whilst providing solar control.

Triple glazing is becoming increasingly popular, especially in total new builds, as it provides the lowest U-Values possible and can be up to 40% more efficient than double glazing. Combining two panes of Low-E glass and two gas filled cavities glazing U-Values as low as 0.5W/m2K are possible with the added benefit of great sound reduction.

For more information on our huge range of glazing options or for help in specifying the correct glass for your project contact our technical sales department on 01603 408804.

Solar control and the benefits of solar gain

With the standard glass specification retaining as much heat as possible you may wish to consider reducing the heat transfer from outside which is known as solar gain. Solar gain can make glass roofs, conservatories or south facing elevations quite unbearable in the height of summer months like stepping into a greenhouse.

A solar control glass is a glass with a either a special coating or a body tint to reduce the amount of heat entering a building either by reflecting or absorbing heat. Using a solar control glass can reduce the need for air conditioning and blinds. Whilst the solar control glasses are great at reducing the heat they will also have an impact on light transmittance.

Building control often recognise the benefits of solar gain in modern buildings as large areas of glass will work as a source of free energy during cooler months and increased solar gains are recommended. The use of low-iron glass can increase the heat and light transmittance to provide further solar gains during the autumn and winter months. Many modern designs incorporate overhangs to cast shadows over glazing during the summer combatting the solar gains. Thus allowing solar gains as the sun gets lower in the sky later in the year reducing the need for heating.

Safety glass

As standard we fit toughened glass to comply with Building Regulations Document N as an alternate method of compliance we are able to fit laminated glass. Both options have their pros and cons.

Toughened glass

Toughened glass has been heat tempered to increasing its strength over ordinary annealed glass by up to five times. Other than the strength the advantage of toughened glass is that should it break it would shatter into non-sharp pieces. It is also available with the widest variety of coatings and can be supplied in larger sheets than equivalent thickness laminated glass.

When the glass is toughened it can suffer from some visual distortion making, meaning the face of the glass isn’t perfectly flat distorting some reflections. Thicker toughened glasses are less susceptible to visual distortion; please contact us for further advice.

Laminated glass

Laminated glass is manufactured by bonding two panes of annealed glass with a clear plastic interlayer. The benefit of laminated glass is that if it’s broken the glass will crack rather than shattering, improving security. In addition, laminated glass reduces bleaching of carpets, curtains and furniture by filtering ultraviolet rays that would usually penetrate the glass.

The drawback of laminated glass is that extreme heat or cold can cause invisible defects in the glass to form a crack due to the two panes expanding and contracting independently. As the laminated glass is not toughened is does not suffer from the visual distortion that can occur to toughened glass during the toughening process.

Custom designs

As well as offering full height clear glass we can also provide a more traditional style of glazing by incorporating glazing bars, Georgian grids or lead work. Please contact us for further information.

Cat flaps

Often neglected when planning your new build or extension is where a suitable space may be for your feline friend, we have the ideal solution. It is possible to have a cat flap fitted into a glazed panel by cutting a circular hole into the toughened glass unit for you to fit an in-glazed cat flap.

Venetian blinds

We are able to fit venetian blinds within the glazed unit, ensuring a totally dust-free environment which requires no cleaning or maintenance. These are very popular, especially on internally opening systems where curtains are not practical.

Integrated blinds can be tilted to help prevent the build-up of excessive heat and glare of the sun during the daytime and provide privacy when closed. Blind units can be manually operated with an ingenious magnetic control device or electronically operated via remote control. Please visit our dedicated blinds pages for further information.

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