Measuring 8 1/2" diameter and 2 3/4" H, this water resistant 4" solar powered ventilation comes with intake & exhaust blades. It moves up to 900 cu.ft./hr of air when powered on solar and with a slight breeze provides passive ventilation at night. It is constructed with stainless steel cover and stainless steel screws are included. No wiring is required during installation.
Cutout size 4 3/4"