Measuring 8 1/2" diameter and 2 3/4" H, this water resistant 4" solar powered ventilation comes with a rechargeable battery. Two blades (exhaust and intake) are provided with each vent. It moves up to 900 cu.ft./hr of air during the day on solar power while charging a rechargeable battery to run at night. Ventilation can run on battery for 24 hours at full charge. It is constructed with stainless steel cover and stainless steel screws are included. No wiring is required during installation and vent comes with a built in on/off switch.
Cutout size 4 3/4"