- who and what needs to be in the enclosure during operation of the noisy equipment
(personnel should be excluded if possible);
-number and location of doors and windows (minimum possible);
- method of door closure (manual, automatic) and type of latch to ensure a tight seal around
the door perimeter;
- automatic machine stop when doors are not closed properly;
- ease of cleaning inside the enclosure;
- ease of maintenance of enclosure and enclosed equipment;
- resistance of sound absorbing material to oil, dust, water or other chemicals; and
- attractiveness of finished enclosure