Product specification:

Model: HA150
Type: Undermount, Single Bowl
Material: 304 Stainless Steel
Processed: Brushed
Thickness: 16 Gauge/1.5mm
Size: 33''X18''X9-1/2'' (838X457X241mm)
        3-1/2" (114mm) drain opening
        3-1/2" (114mm) to 1-1/2" (32mm) strainer
Comes with mounting template, easy to install.

Option:strainer $12/each
Option:grid $60/set