Download Full Brochure
View Video
It Insulates:
- 214% Better than hollow rigid vinyl
- 62% better than wood
THV Compozit:
- Will not rot
- Resists mildew and fungus
- Termite resistant
- Surface hardness superior to pine
- Screw holding power is superior to pine
- Carries UL-VO-94 fire rating—The Best!
- Smoke contribution is well below ASTM standards
- Passed salt-water exposure of 1,000 hours
- Expansion/contraction rate is well below rigid vinyl:
- THV Compozit Approximately 0.2%
- Rigid Vinyl Approximately 3%
Lifetime Warranty:
- Warranted Against: Cracking, Peeling, Flaking, Blistering,
Degradation and Fading
- Space age THV Compozit frame and sash delivers twice the insulating value, keeping your home warmer in winter and cooler in summer.
- Durable 3-1/4” master frame and welded corners deliver years of
strength and beauty
- Triple weather stripping and full depth interlock on sashes virtually
eliminate draft
- Tilt-in sashes for easy cleaning from inside your home. No ladders
- High security ventilation locks help protect your family and home
- Recessed tilt latches and locks for a clean inside appearance
- Full slope sill for classic window look
- Sound absorbent for peace and quiet
- Maintenance-free for years of value and enjoyment
Window Systems
- Investing in replacement windows for your home improves its value, comfort and appearance. Finding the right windows is important.
- Thermal Line Windows has been making windows for over 20 years and our experience and knowledge ensures the best windows for your home.
Available in Several Vibrant Colors

|