NDS 9 in. Square Atrium Grate, Green (991)
The NDS 991 is a green 9 in. square atrium grate. The dome sits above mulch and leaves so water can enter while debris stays at the base. It is UV-protected HDPE and fits 9 in. square catch basins, risers, and low-profile adapters.
Key Specifications & Features
- SKU: 991
- Brand: NDS
- Type: Domed atrium grate
- Size: 9 in. square
- Color: Green
- Material: UV-protected high-density polyethylene (HDPE)
- Fits: 9 in. square catch basins, risers, and low-profile adapters
- Dimensions: 4-3/4 in. high, 9 in. square, 3/8 in. openings
- Weight: 0.87 lb
Frequently Asked Questions
What color is the NDS 991?
Green. The photo is the green grate for this part number.
What does the NDS 991 fit?
9 in. square catch basins, risers, and low-profile adapters. The grate is the cover only. Pipe, basin, and adapter are sold separately.
Is the NDS 991 a dome or a flat grate?
It is a domed atrium grate, so the top stands above mulch and ground cover.
What is the NDS 991 made of?
UV-protected HDPE, 0.87 lb. NDS structural-foam grates are made for outdoor drainage.
