The most commonly used refractory brick size for duck oven is T-3: 230x114x65cm, standard brick

This kind of refractory brick is the most widely used, you can use this kind of refractory bricks in the masonry duck oven bottom and oven wall.

Masonry door is round can be wedge-shaped brick T-38 refractory brick, is usually referred to as the knife-shaped brick, size 230x114x55/65cm. this refractory brick masonry is just a curved.

Do roast duck oven refractory bricks according to the refractory degree, clay bricks generally use the degree of 1200-1300 ℃, high alumina bricks generally use the temperature of 1400-1500 ℃, according to the temperature of the duck oven itself to choose the right material.

You can also consult a professional design.