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

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

2. Height.................................22"

3. Width...................................15"

4. Depth..................................16.5"

5. Air hole................................4"

6. Speaker cutting..................11"

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

8. Weight (Approximate).......15.7 Kg