The patented Wolverine Brand Linear Roof Carbon Septic Filter ELF-2.5 (Patent # US 8,273,162) is a heavy huty versatile linear filter design made of schedule 40 PVC making it not only functional but strong enough to withstand the abuse a filter in the yard might receive by children, lawnmowers etc. The Linear Roof Filter also comes equipped with Darco H2S catalytic carbon giving it an extended life over our WLV-4 residential vent filter. Darco H2S is the same carbon used in our industrial grade products offering up to 4 times the life of regular activated or impregnated carbons.The Linear Roof Carbon Septic can be installed on the end of a vent line giving a linear appearance. A raincap comes standard. The Linear Roof Vent Filter can be attached at the end of a candycane vent. Each filter is manufactured in the U.S.A. and is made of schedule 40 PVC. Schedule 80 and ABS models are available as special order. Each filter is equipped with a drain plug and accepts our unique Saturation indicator to allow monitoring of the carbon bed so you change the carbon before the odor complaints begin. The Linear Roof Vent Filters come standard with a socket inlet with Flange inlets available as an option. The Wolverine brand Linear Roof Filter can be installed upside down on a candycane vent or vertically. The LRF2.5 comes standard with a 4" socket coupling.
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