Each sink can be paired with grids, they are each unique to the size and type of sink.
Material: SUS304, 18 gauges
 
What is it used for?
Grids can be useful for drying dishes and preventing scratches on the sink.
Trays come in handy for utensils.
 
If I purchase a kitchen sink, are the grids included?
Only the strainer is included through a purchase of the kitchen sink. Grids are an additional accessory that we highly recommend.