Triple glazed timber inward opening window (98mm profile), with insulated frame option. Uw value 0.75 – 0.68 W/m2K
IV98
- Inward opening tilt and turn windows (outward opening also available)
- FSC® certified timber in redwood & oak
- FSC® certified Accoya timber drip rail for durability
- Alu-clad option available
- Dual compression seals for long-term airtightness
- Insulated frame window redwood option
- 98mm profile
- Made exclusively for Green Building Store by our partners in northern Europe
Installation Gallery
Timber Window Gallery
Alu-clad Window Gallery
Window style options (many others available)
Glazing & U values
Solid frame:
Whole window Uw 0.75 W/m2K Redwood
Whole window Uw 0.83 W/m2K Oak
Insulated frame:
Whole window Uw 0.68 W/m2K Redwood
Whole window Uw 0.72 W/m2K Oak
Glazing U value: Ug 0.52 W/m2K
Triple unit Argon fill 52 mm
Light transmission value: 74.1%
Typical maximum sizes
Tilt & turn: 1300 mm x 2300 mm
Tilt only: 2000 mm x 950 mm or 1300 mm x 2300 mm
Please note: For Part Q and Secured By Design items, there may be size restrictions. Please get in touch to discuss.
Test results
Air Permeability BS EN 12207: 600 Pa Class 4
Water tightness BS EN 12208: 600 Pa Class 9A
Wind load BS EN 12210: 2400 Pa Class E2400
Exposure category BS 6375-1: 2400
* U values calculated for standard single window 1230 X 1480
Glazing Options
Redwood Colour Options
Oak Timber Stains
Handles