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GREEN ROOF  DRAIN BOXES

Optigreen Drain Boxes prevent soil and granular drainage media from entering roof drains but allow water to flow freely through slots covering the sides and top. Their modular design accommodates extensive, semi-intensive, and intensive green roof systems from 4” to 32” thick. A 12” hole in the base of the box fits over most membrane roof drains. Triangular knockouts in each sidewall panel allow easy connection to Optigreen Triangular Drainage Channels used for green roof systems with granular media drainage. The Drain Boxes are made of black ABS plastic that is unaffected by extremes in temperature.

4" access box	8" access box
12" access box	16" access box

ASSEMBLY: A Drain Box consists of a top cover, a bottom plate, and as many sidewall panels as needed to obtain the required height. Each sidewall panel consists of four 4” elements molded together and can be snapped apart to yield one, two, or three elements. Sidewall elements can be stacked provided joints on adjacent sides are staggered. Assemblies taller than 16” should be screwed together through the holes provided at each corner.

assembling a 4" drain access box	assembling an 8" drain access box
assembling a 12" drain access box	assembling a 16" drain access box

 

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