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Alumina by Liniar: a true aluminium bi-folding door system. Beautifully sculptured and foiled to match perfectly with the full Liniar product suite, Alumina is more energy efficient than other aluminium bi-fold doors.
The Beautiful, Strong and Secure door that is 25% more Thermally Efficient than the Competition. Strong and secure, WarmCore doors come with class leading security built in, backed by a comprehensive 10 year product guarantee.