NDS FWAS24 50 Gal. Flo Stormwater Dry Well System Kit with 3 Side Panels & 1 Cover
- Rain Barrel
- 40 gallons
- Plastic
- 1
- Better rated than 65%
- More reviewed than 60%
An underground 50 gallon drainage chamber for flood-prone yards, built to connect to 4 inch drain pipe and stack or multiply for more capacity.
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How it ranks among the 20 rain barrels we track
4.6★ across 992 Amazon ratings, Bayesian-smoothed toward the category average.
992 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
200+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 20 rain barrels we track - how the scorecard works · full rain barrels data report. Confidence: high - strong rating volume and complete data.Updated 8 days ago. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
A 50 gallon underground dry well kit with three side panels and a top cover that connects to 4 inch sewer and drain pipe through 12 knockout points. Ships unassembled with an open bottom that lets water seep into the gravel and soil below.
This is drainage infrastructure, not a rain barrel: it's buried to collect and slowly release excess water rather than store it above ground for reuse, and it replaces a gravel-filled pit with a hollow chamber the listing says holds 250 percent more water than the same size hole packed with stone. Units stack up to 4 high or sit side by side 18 inches apart when one 50 gallon well isn't enough capacity.
- 50 gallon capacity, 3 side panels plus cover
- 12 knockout points for 4 inch S&D pipe
- Buries or stacks up to 8 feet deep
- 250 percent more detention volume than gravel fill
Who it's for
Homeowners dealing with a yard or landscape area that floods and need underground drainage tied into existing 4 inch drain pipe. Not a fit for anyone wanting to harvest and store rainwater for reuse, that job belongs to a rain barrel, not this kit.
Strengths and trade-offs
Drawn from this product's published specifications.
- Holds more water than a same-size gravel pit
- Connects directly to 4 inch drain pipe
- Rated for pedestrian and lawn tractor traffic
- Stacks or multiplies for added capacity
- Bottom panel sold separately
- Ships unassembled, needs pipe connection work
- Long-term drainage performance not yet reviewed
Performance notes
A small gravel bed under the open bottom lets water seep into the surrounding soil, while the hollow panel design avoids filling the whole excavation with stone, which is what gives it more effective storage volume than a gravel-only pit of the same size. Buried units support pedestrian traffic and lawn tractors, and can be buried or stacked to 8 feet deep, or connected side by side 18 inches apart, for larger drainage needs.
Specifications
| Brand | NDS |
|---|---|
| Model | FWAS24 |
| Dimensions & fit | |
| Item Weight | 9.5 ounces |
| Item Dimensions L x W x H | 24 × 24 × 28.8 inches |
| Capacity & performance | |
| Capacity | 40 gallons |
| Construction & materials | |
| Material Type | Plastic |
| Color | Black |
| Included components | |
| Unit Count | 1 |
| Number of Packs | 1 |
| Included Components | Installation Guide |
| Other details | |
| Number of Items | 1 |
| Item Type Name | Dry Well System Kit with 3 Side Panels & 1 Cover |
| Shape | Round |
How it compares
This product against the closest alternatives we track in rain barrels.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| NDS FWAS24 50 Gal. Flo Stormwater Dry Well System Kit with 3 Side Panels & 1 CoverThis product | 4.6 / 5 | 992 | 4.4 / 5 |
| FCMP Outdoor Raincatcher 4000 Rain BarrelFCMP Outdoor | 4.5 / 5 | 3,100 | 4.3 / 5 |
| Renator Brass Rain Barrel Spigot Kit. Lead-free Compliant. 3/4 Inch Quarter Turn Ball…Renator | 4.7 / 5 | 1,000 | 4.2 / 5 |
| RTS Home Accents 50-Gallon ECO Rain Barrel Made with 100% Recycled PlasticRTS Home Accents | 4.2 / 5 | 3,600 | 4.2 / 5 |
| WaterPrepared 55 Gallon Unique Stackable Utility Water TankWaterPrepared | 4.6 / 5 | 779 | 4.2 / 5 |
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Questions about the NDS FWAS24
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does the NDS FWAS24 come assembled?
No, it ships as 3 side panels and a top cover, unassembled.
What pipe does it connect to?
It connects to 4 inch sewer and drain (S&D) pipe through knockout points on the top cover and side panels.
Can more than one unit be used together?
Yes, units can be stacked up to 4 high or placed side by side 18 inches apart for added capacity.