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Below Grate Storm Drain Filter

The EconoSack drop-inlet filter is a lightweight, construction-phase stormwater device. Use it to filter fine sediments, construction debris, and other pollutants out of stormwater. This unit is durable and utilizes high-quality woven geotextile. In addition, it has heavy-duty straps to catch and secure all of the construction-related sediment and debris. Because the sack latches to and hangs below the grate, it is unobtrusive.


The installation of the EconoSack is easy. Simply remove the grate, clean the edges, fit the bag and straps around the grate, and lower it back into the catch basin.


To maintain full functionality and to prevent hazardous roadway conditions, the EconoSack should be closely monitored and cleaned at specified intervals. Additionally, check this drop-inlet filter during and after heavy storms to prevent stormwater ponding. It is good practice to check the device daily and perform maintenance when the sack is one-third of the way full. Overfilling the sack can lead to torn straps and release all of the captured materials into the storm drain.

For other construction-phase and drop-inlet solutions, review: SediBag, SiltSack, and SiltSack NW.

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