These doors are side hung on hinges and open outward. They provide easy assess for people when open and offer unobstructed views to the outside when closed, allowing in plenty of light compared to solid or timber doors. This makes them ideal as entry doors or for opening onto decks, patios and balconies. Use of openable mullion for 2 wing configurations (french doors) gives a 100% unobstructed opening. Hinged flyscreen doors can be fitted on the inside. These windows feature Thermeco's triple lock systam for added security and excellent weather sealing. They are lockable and can be keyed. They can be push opened or operated with a handle. A separate sub sill is not required as a drainage channel.