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Close angled view of NDS 75 green 4-inch atrium drain grate showing the raised dome pattern and circular collar for a 4-inch pipe connection.

NDS 75 — 4" Atrium Drain Grate, Green, Fits 4" Pipe

Brand: NDS
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$28.41
$21.31
SKU 75
In Stock (90)

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Durable NDS 75 4" Atrium Drain Grate in green protects landscape beds, window wells, mulched areas, and other debris-prone surfaces by allowing water to pass while blocking mulch and leaves. The raised dome-style grate directs surface water into the drain system and connects to standard 4" drain piping for reliable, low-maintenance surface drainage.

  • Material: UV-stabilized HDPE plastic for long-term outdoor durability and chemical resistance.
  • Compatibility: Fits 4" sewer & drain pipe, 4" corrugated pipe, and 4" triple-wall pipe with a soil-tight collar.
  • Open Surface Area: 17.0 sq. in. for efficient water intake while limiting debris entry.
  • Grate Openings: 1/4" openings and raised dome design to reduce clogging from leaves and mulch.
  • Flow Capacity: Will accommodate approximately 52.01 GPM at 1/2" head (typical performance rating).
  • Dimensions & Weight: Approximately 4-3/16" wide and 4-7/16" high; lightweight at about 0.21 lbs for easy handling.

Easy to install and removable for routine cleaning, the NDS 75 atrium grate provides a simple, effective inlet for residential and light commercial drainage needs. Its plastic construction resists rust and corrosion and includes UV inhibitors to resist sun damage; use it with compatible NDS fittings or common 4" drainage components to protect pipelines from sediment and organic debris.

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Frequently Asked Questions

What pipe types does the NDS 75 atrium grate fit?
Fits standard 4" sewer & drain pipe, 4" corrugated pipe, and 4" triple-wall pipe when used with compatible fittings.
What material is the grate made from and is it UV-stable?
Constructed from UV-stabilized HDPE plastic; lightweight, chemical-resistant, and formulated to resist fading and cracking.
How do I maintain or clean the atrium grate?
The dome grate is removable for easy access—remove debris by hand, rinse with water, and reseat the collar to restore a proper seal.