Product Description
The Aquadyne Rhino Replacement Air Disc Diffusers contain a fine pore, flexible membrane diffuser which provides operational flexibility with maximum oxygen transfer efficiency. They feature an integral check valve designed to prevent backflow. Each unit has a built-in 3/4" MPT Male connection which is designed to be attached to the 3/4" FPT connector of your Rhino unit.
The 9" Rhino Replacement Air Diffuser Disc (MPN AIRD9) fits the following Models:
Rhino Retro 2" with Air (MPN RHRET- 2A)
Rhino Retro 3" with Air (MPN RHRET-3A)
9" Rhino Weighted Air Diffuser 9" (MPN RWAD-9)
The 12" Rhino Replacement Air Diffuser Disc (MPN AIRD12) fits the following Models:
Rhino II with Air (MPN RH2-A)
12" Rhino Weighted Air Diffuser 9" (MPN RWAD-12)
Free shipping. Usually ships same or next day. 
