Do they freeze up? I live in Wisconsin and worry the residual water may freeze. Thanks

I have 3 of these (similar buried systems) all running down angle underground and yes they can freeze up (residual water at/around the pop up, “Colorado clay” stops up the little relief drain hole) although just 1 of the lines seems to show drain water backup up to the downspout during melt…anyway, for winter I pull off the 4” at the bottom of the downspouts and slip on another adapter and length of 4” downhill” that is just open at the end (Maybe there’s a better way? because yes we have 4” laying on top of ground level that can trip over etc.!

How does the water make its way to the discharge with a hole in the bottom ?

The hole in the bottom is so small that the vast majority the water will be emitted from the top. The hole only allows a small amount to drain, which is important after that heavy flow has stopped.

My down spout is rectangular is there a piece to connect with that shape on one end and circular on the other?

Correct. There is a rectangular piece that fits on the downspout. Then you need your hose to connect to the drainage

Anybody use this in cold weather climates. Does it freeze up?

No. Have had 2 of then for several years in NY state. Never a problem. However they are used as an overflo for a drain pipe. I have no idea what happens when they are under a foot of snow. IBut f there is running water they won't freeze.

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💧 Stay dry, stay ahead — the smart drainage solution your property deserves!

SMART POP UP DESIGN - Cover rises up to 1 inch under water pressure, then seals tight to prevent debris and pests.
DURABLE TRAFFIC READY - Constructed from high-density polyethylene and PVC, it withstands pedestrian and lawn tractor traffic when installed properly.
BUILT IN ELBOW CONNECTOR - Seamlessly attaches to 4-inch sewer and drain pipes—no extra fittings needed for quick installation.
EFFORTLESS HIGH FLOW DRAINAGE - Releases stormwater at up to 40 gallons per minute to keep your property dry and damage-free.
FREEZE STAGNATION RESISTANT - Small weep hole drains residual water to prevent freezing and blockages in cold weather.

The NDS Emitter with Elbow is a robust drainage component designed to release collected stormwater efficiently at up to 40 GPM. Featuring a pop-up polyethylene cover that automatically opens and closes with water pressure, it connects directly to 4-inch sewer and drain pipes without extra fittings. Built to endure pedestrian and lawn tractor traffic, it also includes a weep hole to prevent water stagnation and freezing, ensuring reliable year-round performance.

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Color	Green
Size	4 Inch
Style	422G
connector-type	Elbow
Material Type	High Density Polyethylene
Number of Items	1
Number of Pieces	1
Included Components	Drainage Emitter with Elbow
Batteries Included?	No
Brand	NDS
Manufacturer	NDS Raindrip
Item model number	422G
Product Dimensions	17.15 x 17.15 x 15.24 cm; 317.51 g
ASIN	B002CSQ0P2

NDS Emitter with Elbow

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