bi folding doorsProduct DescriptionCompany InformationOur ServicesPackaging & ShippingClients and ProjectsProducts Catalogue 1) NF Windows and Doors System’s standard sizes frame work to brick opening sizes eliminating theneed to cut bricks;2) Durable powder coated, electrophoresis, heat transferring and fluorocarbon coating PVDF in different colors according to customers requests to gurantee 15 years quality;3)Warrantyby our 15year guarantee on non-moving parts;4) Engineered and tested to North American Energy Saved, European CE, Australian Standards AS2047 andAS1170 certificate for customers' local building code requirement;5) Compatible with render, brick/block and lightweight construction;6) We could make different shapes of windows and doors according to customers requests.7) Provides insulation from draughts, rain & noise with a self-draining aluminum tread;8) Superior energy efficiency provided by sealing around the door jamb & tread;9) Various glass types available;10) Sill seal fitted as standard for the doors and windows;FAQ