SL38 Window & Door System
The Ultra Slim Steel Look System
The SL38 aluminium window and door system offers a slender steel look which makes it a perfect fit for contemporary architecture and the renovation projects, that feature slim steel-framed windows. Whether you’re after the industrial or retro look, you can design a grid pattern that will complement your home.
Available in 3 different minimalistic design variants: CLASSIC, FERRO and CUBIC, this slim frame aluminium system allows you to perfectly match the architectural aspects of the original building design with much improved thermal performance.
The minimalist frame is reinforced by an invisible drainage system, and hidden hinges wich further adds to the system’s elegant design. The windows can be provided with both double and triple glazing without losing the ultra-slim look. In combination with its superior insulation capabilities, the system provides the perfect harmony between durable material, clean design and demanding architectural challenges.

Slim Frames
Designed to replicate the ‘steel look’ used in many traditional UK homes

A-Rated thermal efficiency
The perfect combination of exceptionally slim line window frames and the highest levels of performance

200+ RAL colours
Whatever colour finish you desire, you’ll be able to find it within our RAL colours range, complete in wood grain and metallic effects
key features of
Slim line 38 windows
Colours
Aluminium frames can be polyester-powder coated in a wide range of RAL colours, or can feature a metallic or anodised finish.
Our standard range of RAL colours covers some of the most popular customer choices for achieving that premium look. Though if you're looking for something different choose from a wade variety of RAL palette options, metallic, anodised or even woodgrain finishes.
The SL38 system offers an alternative to the finely-profiled steel windows. Ideal for modern, minimalist, industrial look.
Image from our installation at the Empire House, Whitechapel
profile options
With its minimalistic frame and ultra-slim profiles, SL 38 combines elegant design, stability with market-leading energy efficiency.
The SL 38 system is available in three very different minimalistic design variants, Classic, Ferro and Cubic; to perfectly match the architectural aspects of your home.
These beautiful windows and doors can be provided with double or triple glazing without losing the ultra-slim look.
Security you can Trust
SL38 window and door system is designed and tested to the most stringent security standards (ask for specification)!
- One of the most secure windows available
- PAS24 security upgrade available on windows only
- Enhanced security with hinge-side security brackets
- Multi-point locking mechanism
- Lockable handle
VISIT OUR
SHOWROOM
Book a visit in our Orpington Showroom. Currently our showroom visits are by appointment only, so book your meeting prior to your arrival.
Start your
Project
Tell us about your project, so we can prepare a quotation for exceptional windows & doors that add character, style & value to your home.