Traditional grid Grid that allows the passage of air to facilitate ventilation between rooms. Categories: Air Systems, Grids, Ironworks, Ironworks, Grids, Air Systems, Solutions, Solutions You may also like… Read more Mallorcan grid Read more Read more Castair aeration Read more Read more Integrated grid Read more Related products Read more 1, 3 and 5 Point Security Lock Read more Read more Digital Peephole Read more Read more Shielded and Armored Doors Read more Read more External Sliding Door Celcast Read more