
Our best-selling cost-effective triple glazed timber outward opening casement window. Uw 0.85 W/m2K.
OUT78
- Outward opening (inward opening also available)
- High performance triple glazing
- NEW slimmer profiles
- Dual compression seals
- FSC® certified timber in redwood & oak
- FSC® certified Accoya timber drip rail for durability
- Dual compression seals for long-term airtightness
- Secured by Design option
- 78mm profile
- Made exclusively for Green Building Store by our partners in northern Europe
Installation Gallery
Window Gallery
Window style options (many others available)
Glazing Options
Redwood Colour Options
Oak Timber Stains
Handles
Most handles are compatible with our windows and doors so if you are looking for something a bit different to what is shown please get in touch with the windows team and we will be able to find something to suit your needs.