Manufactured from recycled acrylonitrile-butadiene-styrene (ABS) with narrow slots on the sidewalls and small holes on the top cover, SOPRANATURE® Drain Box blocks debris while allowing continuous water flow to roof drains. A 12-inch opening provides unobstructed drain access, and wide bottom extensions ensure the drain box will not float during times of high water intake. SOPRANATURE® Drain Box comes in a standard 4-inch height that can extend up to 32 inches with extension kits.