I bought this Sub 33cmx33cmx33cm for the dimensions. He was in the compartment of a Ikea Expedit shelf fits (33.5 cm x 33.5 cm). However, the dimensions are not entirely accurate or were here the feet disregarded.
By unscrewing this I could still useable yet carry out this subwoofer to the desired application.
Here is my proposal description.
* Power 300 Watts RMS continuous power
* Driver front-firing long-stroke 12 "driver - 30 cm Bass
* Case Dimensions: 33.02 cm (H) x 33.02 cm (W) x 33.02cm (T). Overall Dimensions: 34.29 cm (H) x 33.02 cm (W) x 35.56 cm (T) (incl. Feet and cover)
* Weight: 12.27 kg
* Design in Black