These 8" round or 8"x8" square grates will work with most standard Thunderbird Products 3.5" threaded drains. They are made of nickel bronze. These optional grates can easily fit into your desired deck or patio style and add a high-quality look to any drain top.
Our 3.5" threaded grates are designed for use with our BD6-A Series drains
8" Round or 8" x 8" Square Designs, with 2" of threads for adjustment
Made out of nickel bronze
Developed with a standard thread pattern for most 3.5" thread diameter drains