To ensure the safety and protection of your outdoor kitchen, kitchen vents (RVNT1) are required every 4 feet. These help ventilate and prevent dangerous gas build up in your outdoor kitchen. Ventilation panels are also great at venting traces of gas out of the cabinet, remove excess heat, adds air to help with the air/fuel mix for the grills, and allow moisture / condensate to evaporate. Cut Out: 12 1/2" Wide x 3 1/2" High