Grate Extender for Deck Drains Thread Size:3.5" Threads and musty odors with strategically

and musty odors with strategically placed copper foundation vents

Simple Retrofit Design: The insert design slides easily into your existing drain pipe for a hassle-free installation

Available with optional brass elbow

and 6" drain sizes to accommodate various commercial roof drain requirements and drainage system specifications across different building types and roof areas

Seamless Basin

Grate Extender for Deck Drains Thread Size:3.5" Threads and musty odors with strategicallyExtends thread pattern grates an additonal 2". These grate extenders can be threaded into each other to reach any desired height. Two sizes to choose from 2" thread pattern for our: 4" & 5" Round Grates, and 5"x5" grates 3. 5" thread patter for our: 6" Round, and 6"x6" grates.