White plastic vent is domed for a more attractive appearance and greater air flow. Patented hose attachment system holds 4" blower hose with no clamps or fasteners! Domed grill looks great and provides 7. 33 square inches of ventilation. Just cut a 4. 25" hole, pull the blower hose through, thread it onto the patented clamping fingers, then sngrill in place. No fasteners or hose clamps required! Overall dimensions: 4. 5" diameter, 1. 25" long tailpiece. Replthose old, cracked flat vent grills with stylish, domed vents! Sold 1 ea. 2 pictured for reference only.
