For proper ventilation and safety, it is recommended to position your Viking gas range at least 1 inch (2.5 centimeters) away from adjacent cabinets or walls on either side. This spacing allows for sufficient air circulation and prevents heat buildup, which can be a fire hazard. Additionally, the extra space provides easy access for cleaning and maintenance. For the back of the range, leave at least 3 inches (7.6 centimeters) of clearance to accommodate the gas line and other connections. Always refer to the installation manual provided by Viking for your specific range model to ensure proper ventilation requirements are met and to comply with safety standards.