The WINDHOP 3 directed flow filter-supporting air diffuser in stainless steel for operating theatres Risk 3. It is ideal for renovation of operating rooms or rooms with low heights under the ceiling.

A good rinse with hot tap water does it six days a week, and on the seventh I soak the filter in a vinegar/water solution for about 30 minutes. If I skip the vinegar rinse, I notice a sheen of oil ...