NICCO timber bi-fold windows (or folding windows) create an expansive feel by folding back to create a seamless transition between indoor and outdoor areas. They are great in kitchens where they can act as a servery to an outdoor patio or entertaining area and can be designed to accommodate an integrated insect screen that retracts to disappear when not in use. They are the best option for achieving maximum opening space and can be custom made to open both inwards and outwards.