Febco LFFRK 850 870 CK4 856 876 CK1 860 880 CK2 4 Part of the RK 850 860 856ST 876VST 880 LF850 LF860 LF856 LF876 LF860 LF880 Series Geotextile Specifications Body Material Cast Iron Specifications Body Material Cast Iron Brand Watts Buy American Act Compliant NO FreeArea 137 IN Lead Free Not In Scope Outlet Connection Size 8 IN Outlet Connection Type No Hub OverflowDome No OverflowDrain Does Not Apply To Product Specification Sheet RD 300 and union gasket This check kit includes the parts necessary to repair or replace either the first or second check module of a 4 inch double check valve assembly 1st check of a double check detector assembly