Amazon.com : NDS 430 Pop-Up Drainage Emitter with Elbow and Adapter for 3 in. & 4 in. Drain Pipes, works with drainage systems including catch basins, Green Plastic : Pipe Fittings :
Pop-up Emitter with Flexible Elbow – Reln International
NDS Pop-Up Drainage Emitter with Elbow for 3 in. Drain Pipes, Green Plastic 322G - The Home Depot
Drainage 101: The Benefits of Using Pop-Up Emitters | Landscape maintenance, Backyard drainage, Drainage
Pop-Up Emitters - Source 1 Drainage | Source One Environmental
Pop-up Drain Emitter Clogged? Here's What To Do
Amazon.com: NDS 422G 4" Pop Up Drainage Emitter with Elbow, 4 Inch, Color may vary : Patio, Lawn & Garden
RELN 4 in. Pop-Up Emitter with Flexible Elbow 000233 - The Home Depot
4 in Pop-up Emitter with Catch Basin, Connects to Corrugated