How to Clean Your Discolored Vent Covers With Hydrogen Peroxide
by Elizabeth Yuko from Lifehacker on (#5NXJW)
There's a difference between something being dirty and discolored-and plastic vent covers can be both. While many homes feature vent covers made of metal, plastic is also relatively common. And one of the downsides of white plastic vent covers is that they yellow over time, ending up discolored.