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Dandy Sack - Inlet Protection System


SKU MM-DS-24-24

The Dandy Sack is a drop inlet filter that provides high level storm grate filtration. These strong sacks are open-top silt bags made to hang below the storm grate. They are able to filter very thick sediment filled stormwater. The suspended solids are allowed to settle out of the slowed flow and are captured by the Dandy Sack prior to entering the inlet. This product is easy to install, and has internal straps to add extra support and security for installation and removal.

Dandy Sack is available in various sizes and is reusable for jobs needing silt bags for catch basins.



Product Specifics

  • Free Shipping
  • Need a Written Quote
           Request Online >
  • Questions? Call (800) 640-5537

Product Features

  • Affordable price
  • Super easy installation. No rebar required
  • Internal straps cradle the grate for added support and security when installing and removing
  • Two-foot containment area is manageable
  • Easily seen because it's fabricated from a bright orange monofilament geotextile


  • FREE SHIPPING (standard ground, see map)
  • Call: (800) 604-5537 for pricing and ship times

Shipping estimates shown on the map pertain to this specific product only. Orders typically ship in 1-3 business days if the order is placed before 12:00 noon EST. Transit times displayed in the map are listed in business days, and are approximate. The day that the order is shipped is not counted as a transit day.

Installation and Maintenance Guidelines


  • Remove the grate from catch basin.
  • If using optional oil absorbents, place absorbent pillow in pouch on bottom of the unit.
  • Stand the grate on end. Move the top lifting straps out of the way and place the grate into the Dandy Sack so that the grate is below the top straps and above the lower straps.
  • Holding the lifting straps, insert the grate into the inlet.
  • Maintenance:

    •  Remove all accumulated sediment and debris from vicinity of the unit after each storm event.
    • After storm event and at regular intervals, look into Dandy Sack. If containment area is more than 1/3 full of sediment, the unit must be emptied.
    • To empty unit, simply lift the unit using lifting straps and remove the grate. If using optional oil absorbents, replace absorbent pillow when near saturation.
Inlet Protection System Manufacturing

Dandy Sack in Production

Dandy Inlet Protection Systems

Dandy Sack is a high quality, and uniquely designed inlet protection product. It is made of safety orange monofilament geotextile which helps it to look new even after multiple uses. The suspended solids settled out of the slowed flow and then captured by the Dandy Sack prior to entering the inlet.

All Dandy Products are made in America.

Workers Putting Dandy Bag on Grate

Dandy Bag Installation

Using An Inlet Filter Will Improve Sediment Control

Inlet filter protection bags filter runoff water around storm drains or curb inlets. Sediments and other pollutants are filtered out so water can pass through the structure.

What An Inlet Filter Does

The sole purpose of an inlet filter is to control the amount of sediment it traps.

Inlet filters are used as a temporary fix when soil is disturbed and when it rains, these filters are used to keep soil out of storm drains.Inlet filters are critical for protecting drinking water used by cities and a big reason why these filters are in place. They work by keeping silt from entering through the inlets, storm drains, and recovery channels.

In cases where any construction is going on and soil can be disturbed,  it's important to keep construction debris from coming into contact with groundwater. This filter can be used to allow water to go through while the filtering element stops silt, dirt, and debris, regardless of how fast or slow the water flows.

Dandy Sack on Grate

Installed Dandy Sack on Grate

Curb Sediment Filter in Place

Curb Sediment filter in Place

The Types Of Inlet Filters

There are different types of surface filters to choose from when dealing with low, medium, or high current speeds of water from rainfall or flooding.

- The surface curb filter is used for larger-scale projects including basins.

- Another filter is an inlet tube used for stormwater protection. These tubes can be weighted or non-weighted.

- The weighted tubes do not have to be staked in the ground to keep them in place. They are normally placed on top of gravel, asphalt, or other hard surfaces and work really well in areas where construction traffic may be around an opening where water can enter.

- The non-weighted tubes are used in other environments such as grass or brush and are typically tied down with stakes.

- Erecting a barrier of porous fabric around an inlet will create a shield against sediment while still allowing water to flow through the drain.

- You can also choose a specific filter to capture certain industrial or commercial pollutants including hydrocarbons and metals where BMPs including pretreatment for certain contaminants before moving water flows directly into ground aquifers.

While there are many different inlet filters and methods to combat erosion control and the spread of harmful contaminants, it's a good idea to consult with a professional ahead of completing a project.

There are a few quality inlet protection companies with experience guaranteeing that construction projects are Clean Water Act compliant to help prevent any costly fines demanded by state inspectors.