Calvana Square Drain Grate (2-Pack) for 12-Inch Basins | Diamond Design, UV-Resistant Polyethylene

Overview

The Calvana Square Drain Grate is a robust, two-pack solution designed to sit atop 12-inch catch basins, risers, or low-profile adapters. Its diamond-style opening balances debris capture with steady water flow, helping keep outdoor surfaces clearer after rain or irrigation.

Rugged, UV-Resistant Construction

Crafted from tough polyethylene and treated to resist UV fading and cracking, this grate is built for outdoor use across seasons. An additional 5% reinforcement makes it about 0.5 pounds heavier than the 1211G model, delivering extra durability for busy spaces without sacrificing practicality.

Performance you can count on

With 53.1 square inches of open surface and a potential flow of up to 162 GPM, the grate supports significant surface water. When installed correctly, it’s rated for NDS Class B loads (up to 175 psi), making it suitable for medium-duty tire traffic and light trucks traveling under 20 mph.

Where and how to use

Ideal for driveways, patios, lawns, gardens, walkways, and areas under downspouts, it helps filter leaves and debris before they reach the drainage line. Install by placing the grate on top of a capture device such as a 12-inch catch basin, riser, or low-profile adapter to promote efficient drainage of surface water.

Key benefits at a glance

• Blocks leaves and debris while preserving water flow
• UV-treated, fade-resistant polyethylene for outdoor longevity
• Extra reinforcement for durability in high-use areas
• Straightforward top-install with compatible basins and adapters

Notes on use

This 2-pack targets typical residential and light commercial drainage needs. Verify sizing and installation with compatible components for best results. The features highlighted reflect the product’s stated design and common usage scenarios.