Plastic Air Vent Cap Grille Duct Outlet
Diameter ?:4 Inch 100mm
- Two sizes round ABS air grille cap.
- Exhaust air and supply air with fins.
- Design of the hemispherical hood, windproof and rainproof.
- Design of protective grid effectively prevents mouse from entering birds.
- Ideal for all wall vents, ventilation systems, exhaust fan pipes hoses.