Mounting dimensions: 17,5 x 20 cm / 6.82 x 7.8 inches
Overal dimensions: 23,5 x 25 cm / 9.16 x 9.75 inches

Mounting dimensions: 16 x 19 cm
Overal dimensions: 23 x 25 cn

Mounting dimensions: 19 x 20 cm
Overal dimensions: 26 x 30 cm

Mounting dimensions: for 18- 20 cm lang
Overal dimensions: 20,5 x 28,5 cm