All Altus French Doors have a 'double handle set' so that both doors open without the need for undoing bolts and catches. There is a choice of low threshold and the standard UPVC type (for easy access). Our 'open in' doors have a weather deflector that keeps the rain away from the seals, and fully adjustable locking system that keeps the doors tight into the frame when closed.
If the opening that you plan to put the new doors into is above 2 metres, it would be advisable to fit side panels. If required these can have openings in the top to help with ventilation.
Opposite are a few pictures of recent UPVC French Door installations undertaken by Altus.