About Knockout Joinery
Smart Visofold 1000 Bi-fold Doors
The Smart Visofold 1000 Slim folding door is an ideal solution for customers who value modern design, strong security, and excellent thermal performance.
Combining clean lines with smart engineering, it delivers benefits for both homeowners and installers alike. Installation is straightforward, while features such as the slimline frames, Quick-Glaze Bead system, and impressive energy efficiency help it stand apart from competing products.
PAS 24 tested as standard, this folding door allows you to confidently provide cutting-edge performance while reinforcing your reputation as a reliable and knowledgeable professional.
Smart Visoglide Plus Sliding Doors
Smart Visoglide Plus sliding doors are designed to deliver outstanding thermal performance, security, and smooth operation, all while enhancing natural light thanks to their slim 35mm interlocks as standard.
Made to suit your customers’ exact needs, the system supports multiple layout options, including traditional sliding and lift-and-slide configurations. An integrated internal upstand allows for a clean, flush floor finish.
Available with double or triple tracks, the doors can be specified in 2, 3, or 4 panel arrangements and accommodate sash weights of up to 250kg.
Like all Smart systems, Visoglide Plus offers an extensive range of colours and finishes, including dual-colour options for added design flexibility.
Heritage Windows
When working on heritage or period properties, the Smart Alitherm Heritage Window offers an ideal window replacement solution.
Designed specifically to replicate traditional steel windows, these frames blend effortlessly with existing architectural features, preserving the character of the building while improving thermal performance and security.
Manufactured using premium materials, Smart Heritage Windows deliver long-lasting strength, excellent insulation, and improved comfort, supporting a more energy-efficient outcome. As with the wider Smart range, they are available in an extensive selection of colours, with coordinating products such as single doors, double doors, and bifold doors featuring the distinctive Heritage stepped sash.
Heritage Doors
To perfectly pair with Alitherm Casement Windows, Smart Heritage Single and Double Doors offer a cohesive and stylish solution.
Featuring Smart’s advanced polyamide thermal break, these doors deliver impressive thermal performance, while slim sightlines create a refined, elegant appearance suited to both period properties and contemporary spaces.
A choice of standard or Art Deco handles allows for added design detail, and as with the full Smart range, a wide selection of colours is available.
The wider Heritage collection also includes casement windows and bifold doors, making it easy to achieve a consistent look throughout the project.
Aluspace - Internal doors and screens
The versatile internal screen and door system from Smart Systems provides a refined and modern solution for a wide range of interiors.
Available as fixed screens or as hinged, sliding, or pivot doors, each option features clean, slim profiles and can be specified with either single or double glazing.
Ideal for both residential and commercial environments, this system combines flexibility with understated design.
Alitherm 400 Windows
The Alitherm 400 system is well suited to both residential projects and light commercial use, combining reliability with ease of installation thanks to integrated gaskets and the Quick-Glaze bead system.
Alongside casement windows, Garrard Windows also offers matching Tilt and Turn windows, as well as Single and Double Doors, allowing for a consistent finish across the project.
Built to a high standard, the Alitherm 400 delivers strong thermal performance and dependable security. With an extensive choice of colours available, customers can tailor the look to suit their exact preferences.