6" long with 1/2" fpt

Designed to improve oxygen absorption, these diffuser membranes deliver all of the performance of air stone diffusers without the hassles of replacing cracked stones or frequent cleanings due to debris accumulations. 

Virtually maintenance-free, membrane diffuser sticks resist clogging and their flexibility eliminates the possibilities of cracking and leaking.

(Replacement for the KoiAir Self-Weighted Diffuser Plate)

• Virtually Maintenance Free
• Screw Into Existing ProAir Plates
• Replaces Air Stones on Airmax Aeration Systems