1) FDM’s Not Quite a 90 fitting for maximum flow rate.
1) 4 in. x 12 in. Dual Wall Riser for Clean Out
1) 4 in. Corrugated to 4 in. PVC HDPE Female Coupler with fasteners
Leaf Filter Clean Out Slides inside:
4″ Corrugated single wall pipe
4″ Dualwall corrugated pipe
4″ PVC SDR 35
4″ PVC Schedule 40
4″ PVC Schedule 30
4″ Triple Wall septic field pipe
Black is recommended in the Northern Climates because the sun’s radiant energy heats the black vented Cleanout during the winter to help cope with freeze ups. It doesn’t prevent freezing. It helps with the thawing process of frozen downspouts.