Varmint Guard Fan Pipe Cap with Screen - Fits 4 Pipe by RadonAway;

Varmint Guard Fan Pipe Cap with Screen  - Fits 4" PipeAlllows radon gas to escape, but keeps pests and debris out.  Fits standard Schedule 40 4" PVC.Instructions:1). Use smooth clean cut or factory end of pipe where guard will be installed2).  Place the stainless steel mesh on the end of the pipe3).  Fit the molded plastic part on the end of the pipe and over the mesh4).  Install the two stainless steel screws