65,000 BTU Rating compatible with most 36 or 30-inch cooktops, This retractable downdraft vent rises 13.5 inches to help filter steam and remains flush with the cooking surface when not in use., Powerful ventilation system helps capture smoke, grease and odors., Mesh filters help keep the kitchen environment fresh, 13.5" rise enhances capture above cooktop for effective venting, Retractable design stays flush with cooking surface until needed