6" x 6" Square Adjustable Grate with 3.5" Diameter Thread Pattern PVC The one-way air damper (flapper)

The one-way air damper (flapper) is designed to let air out and is not suitable for these applications

The Thunderbird Products TPO Clad Stainless Steel Side Outlet Roof Drain provides a superior solution for handling water drainage on your TPO roof

Screen is included on all units

Separate Overflow Drainage: The unique overflow connection prevents water backup on your roof during heavy precipitation

The built-in overflow offers an extra layer of protection against water damage to your roof and the structure beneath

6" x 6" Square Adjustable Grate with 3.5" Diameter Thread Pattern PVC The one-way air damper (flapper)The Thunderbird Products 6" x 6" Square Adjustable Grate offers a practical and aesthetically pleasing solution for your drain system. Crafted from high quality cast brass, this grate provides both functionality and style. Features: Adjustable Height: The grate features a height adjustment range of 2 inches, allowing for customization to fit various installation depths. Durable Brass Construction: The cast brass material ensures long lasting