Square Atrium Grates

Square Atrium Grates

Product Files
Product Description

The Square Atrium Grate, available in 9" and 12" sizes, is a rugged, square, domed grate designed for use in conjunction with a catch basin. The large opening slots allow for maximum flow while still preventing large debris from entering the drainage system. Typical application would be areas where floating debris would block a flat grate. This product is available in green and black. For safety, and to reduce vandalism or theft, the grate has two holes enabling it to be screwed onto the basin.

  • Manufactured from structurally foamed High Density Polyethylene (HDPE).
  • UV stabilized to protect from sun degradation.
  • Available in green and black.
  • Fits 9" or 12" catch basins.
  • Textured anti-skid surface.
  • Includes two holes to secure to basin (use #6 x 1.5" flat Phillips head stainless screws).
  • Made in the USA.


A square domed grate that fits onto a catch basin used for medium sized flower beds. The function of the catch basin is to collect sediment in it's sump area and not allow this sediment to enter and plug the drainage pipe. For safety reasons and to protect from theft or vandalism grate can be screwed to catch basin. This style of grate is not suitable for pedestrian and bicycle traffic. The domed or atrium style is designed to prevent mulch or debris from plugging the grate openings.

9 inch Grate

Dimensions:8.90" length x 8.90" width x 1.15" height
Weight:0.65 lbs.
Open Area:31 sq in
Slot Width:3/8"
Flow Rating:40 GPM
Fits:Use with 9” Square Catch Basin

12 inch Grate

Dimensions:11.75" length x 11.75" width x 1.15" height
Weight:1.30 lbs.
Open Area:50 sq in
Slot Width:7/16"
Flow Rating:65 GPM
Fits:Use with a 12” Square Catch Basin

Product Specifications
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