2 Diffuser Rocking Piston Air System 45 Elbow (SOCxSOC) The small filter grate is

The small filter grate is an egg crate shaped material while the medium and large grates are an engineered structural plastic material capable of holding several hundred pounds

Photo shows brown color

2600 w/o fish Yes-18 1"

It draws up tight to any pipe from 1-1/2 to 4" in diameter

2 Diffuser Rocking Piston Air System 45 Elbow (SOCxSOC) The small filter grate isThis popular model is perfect for a variety of small ponds. System includes the SRC new Gen 2 Stratus 1 4 HP Sound Shield Rocking Piston Compressor or the SRC new Gen 2 Stratus 1 4 HP without Sound Shield Rocking Piston Compressor. Both are American made and carry a 2 year warranty. These compressor can aerate as deep as 50 feet! The system comes with complete installation, operation, and maintenance instructions Components of this system include: 1 4