It's also a bad idea to use an existing roof vent for bathroom exhaust. You'll partially block the vent with the duct pipe, reducing the flow of cooling air through your attic. Moreover ...

If you have two bathrooms that are close together and one has an exhaust fan and the other doesn't, you might be wondering if you can tie a new exhaust duct into the existing one. Well, you can't!

【Anti-corrosion Material】This roof vent cap is crafted from high-quality iron, featuring a black coating on its surface. This effectively isolates the vent from the external natural ...