This SIM/TECH 4" Bristle Filter is an excellent filtration for solids, including toilet paper, hair, lint, etc. Easy installation just about anywhere, even square baffles. Easy and economical to maintain even in hard to reach places. Bristles self lock into place to prevent filter float up.

Longer filter life because debris is sorted by size. Allows biological maturing necessary in wastewater treatment systems. Durable enough to be washed out, economical enough to be disposable.

For use in residential, commercial and other applications.

This SIM/TECH 6" Bristle Filter is an excellent filtration for solids, including toilet paper, hair, lint, etc. Easy installation just about anywhere, even square baffles. Easy and economical to maintain even in hard to reach places. Bristles self lock into place to prevent filter float up.

Longer filter life because debris is sorted by size. Allows biological maturing necessary in wastewater treatment systems. Durable enough to be washed out, economical enough to be disposable.

For use in residential, commercial and other applications.

This SIM/TECH 7" Bristle Filter is an excellent filtration for solids. Easy installation just about anywhere, even for square baffles. Easy and economical to maintain even in hard to reach places. Bristles self lock into place to prevent filter float up.

Longer filter life because debris is sorted by size, allows biological maturing necessary in wastewater treatment systems. Durable enough to be washed out, economical enough to be disposable.

For use in residential, commercial and other applications.

The Retro-Air complete hose kit contains a 15-foot section of 1/2" flexible PVC pipe, float, and weighted fine bubble diffuser pre-assembled and ready to drop in your septic tank. Can be used as a replacement for the Retro-Air or in a new installation.