Drain Grates

This is a great upgrade for Thunderbird Products roof drains. Heavy duty cast aluminum strainer can add weight and will not encounter any type of sun damage. Heavy Duty Cast...

Membrane clamp in two sizes for our deck drains and commercial deck drains Membrane Clamp for use with Thunderbird Products deck drains Made of strong 16 gauge stainless steel Fastens...

Universal stainless steel grate for use with our balcony drain products. Universal stainless steel grate for use with our balcony drain products 

Copper replacement dome for our parapet drain products. Made of strong 16 ounce copper. Made of strong 16 ounce copper Fits our parapet drain products This item is also available...

Extends thread pattern grates an additonal 2".  These grate extenders can be threaded into each other to reach any desired height. Two sizes to choose from 2" thread pattern for...

Stainless Steel or Copper flat grate. Compatible with our Bottom Outlet and Side Outlet Roof roof drains. This item is also available in ABS Plastic