12x12x5 (11.75 x 11.75 x 5) MERV 13 Tier1 Grille Filter NoShipIowa The QS-012 Viqua Quartz Sleeve

The QS-012 Viqua Quartz Sleeve provides thermal protection to your S740RL-4C ultraviolet lamp ensuring your disinfection system continues to reduce bacteria and viruses in your water

The PENTEK-R50-BB is resistant to both bacteria and chemical attack making it a great choice for a variety of residential

The W5W has a lower micron rating than the W30W and W50W filters and gives you even better sediment filtration

The USWF gravity-fed filter elements combo pack can be used as replacements for the Berkey BB9-2 black carbon & PF-2 fluoride filters but also fit many other brand's gravity systems

particulate matter class I and II

12x12x5 (11.75 x 11.75 x 5) MERV 13 Tier1 Grille Filter NoShipIowa The QS-012 Viqua Quartz SleeveOur Tier1 air filter grilles are constructed to ensure air to flow effortlessly between your ventilation systems and your interior rooms. The filters are easy to replace, and larger media capacity provides highly efficient dust particle capture. Nominal size is 12x12x5. Actual size is 11 3 4x11 3 4x4 3 8. No assembly required, the filter should easily slide right in! Improve your overall air quality and circulation in your home with a Tier1 air filter