These covers include a rubber mounting gasket and are made from 6061-T6 Aluminum Plate. Finish will be excluded to allow for ease of cleaning and for a much cleaner cosmetically pleasing appearance. MST logo centered on the face. Top or Side Ventilation available upon request. The following hardware included: Stand-off nuts, flatwashers, button head allen screws, and o-rings. Please inquire for prices regarding Full Flow Options. SKU: 010080153