This box specially designed for sub woofers for small halls. Its specification is as fallows

1 .Ply wood.............................18 mm 

2. Height.................................18"

3. Width...................................12"

4. Depth..................................12.5"

5. Air hole................................2.5"

6. Speaker cutting..................7.5"

7. Outer...................................Carpet

8. Weight (Approximate).......9.8 Kg