The THS Series high-performance horizontal sand filter from Pentair filters up to 27 square feet of filtration area. The line offers two 34-inch-diameter tanks that fit through standard doorways for easy installation, plus a manway in the front of the unit for easy access. It features an NSF-approved, 50-psi-rated tank with flow rates up to 535 gpm in a single tank.

Contact: Pentair Commercial Aquatics, 800.831.7133; www.pentaircommercial.com