you can tighten the screws to complete the installation

the unit requires a rough opening that measures 12-3/4 inches in width by 26-1/2 inches in height by 4 inches in depth

The towel shelf can be mounted onto most hard surfaces via the mounting brackets concealed beneath the pair of 22-gauge

The dispenser requires a rough opening of 11-3/4 inches in width by 5-1/4 inches in height by 3-3/8 inches in depth for proper installation

Measures 4" from front to back

Elkay LR3122PD2 18 Gauge Stainless Steel 31' x 22' x 7.625' Single Bowl Top Mount Kitchen Sink Kit Mount Type-Wall Mounted you can tighten the screws18 Gauge Stainless Steel 31' x 22' x 7. 625' Single Bowl Top Mount Kitchen Sink Kit