Rattleware Knock Boxes


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These stainless-steel knock boxes are the ideal solution for removing used coffee grounds from your portafilter, and can be used either as stand-alone units or mounted in-counter.

A replaceable rubber bar cover reduces damage to your portafilter and eliminates the risk of losing the filter to the garbage disposal and increases safety with handling.

Made with sturdy 18/8 stainless steel. Features a welded metal bar for strong sides.

Choose from a variety of finishes and shapes.

Note: All options - except the basic square - come with a protective edge gasket made of molded rubber.

The various finishes (Powdercoated Steel, Maple and Stainless Steel) add strength to your knockbox. 


Cutout Dimensions: 5.75" (14.5cm) Width x 6.25" (16cm) Length x 4" (10 cm) Depth.

These are the interior dimensions. We recommend that you receive the product and measure before cutting your counter.

The overall dimensions of the product are: (5.5" x 6" x 4") (14cm x 15.2cm x 10cm)


  • (6.25" x 7.5") (16cm x 19cm)