Pagoda Vent onsite septic system vents are designed to provide optimum ventilation to septic microbes. The units are meant to be aesthetically pleasing and have a durable lightweight exterior that will not fade or rust. They are easy to install, while encouraging a healthy subsurface environment and mitigating harmful gases. They help preserve concrete component integrity by diminishing microbial-induced corrosion. Optional odor filter cartridges can be concealed in the unit. 888/864-1468; www.pagodavent.com.