Zurn Z310 - Thoroflush Drain Select Product (see spec sheet for info):ZN310-4IP - Cast Iron Body with A.R.C. Interior and Exterior with Polished Nickel Bronze Top - 4” Pipe Size - Threaded The grate is made of
Baker’s notes & crumb story
Description
Zurn Z310 Thoroflush Drain Select Product (see spec sheet for info):ZN310 4IP Cast Iron Body with A.R.C. Interior and Exterior with Polished Nickel Bronze Top 4” Pipe Size Threaded The grate is made of The grate is made of ductile iron and will rust over time forming a protective iron oxide patina that begins red orange and ages to a deep biological degradation and it is chemically inert to any natural bases or acids