A built-in fan oven is a solution for people who often prepare larger dishes or multiple meals at the same time. These ovens have a fan that blows hot air through the oven. This provides an even heating and preparation of your dish. That way, you can be sure your meal is evenly cooked on all sides. A standard size for a built-in fan oven is 45 or 60cm. No matter if you have a small or large niche, a built-in fan oven always fits.