Classic
Ferro Flush
With these design options, the SL38 system provides a comprehensive range of styles to cater to different tastes and project requirements, ensuring an attractive and high-performance solution for any window application.
SL38 is available with both Standard and HI insulation levels – with U-Values down to 0.74 w/m2K and Water and Wind performance of 900 Pa and 2,400 Pa respectively.
With sightlines of just 38mm beats most other systems hands down.
SlimLine 38 High Insulation + inward and outward opening windows build on the success story that is SlimLine 38
SlimLine 38-HI+ has a larger system depth than the standard
system, yet offers the same slender aesthetics, the same
popular design variants and comes at a very competitive price.
What is more, the optimised production process limits the risk of
possible mistakes during fabrication. Enjoy sustainable design
that lasts a lifetime
* Above specifications may not all be standard – some are optional extras
Maximum Vent Width
Maximum Vent Height
Maximum Vent Weight Tilt & Turn
Maximum Vent Weight Turn Only

65mm Sightline from Outer to Vent
A Rated Window – even with Double Glazing
Internally beaded vent
| U Value | • Down to 1.1W/m2k (Triple Glazing) • Down to 1.5W/m2k (Double Glazing) |
|---|---|
| Windows Energy Rating (WER) | A |
| Air | Class 4, 600pa |
| Water | 900pa |
| Wind | Class AE, 2400pa |
| Document L | Compliant |
With sightlines of just 65mm Outer-to-Sash and 110mm Sash-to-Sash – SL68 beats most other systems hands down.
CS77 is the perfect solution to any glazing project – versatile, secure and high thermal insulation performance.
SL38 offers super-slim sightlines, 3 modern design options and excellent thermal performance.