Each shelf is 60 squareinches

Each guard is made of 1/4" thick schedule 40 steel

The end of the hook measures 1-1/2 inches in height

These mounting screws attach the hook's flange to its heavy-duty wall plate

Elkay 17 in x 22 in x 10 1/8 in Drop-In Sink with Faucet Ledge with 13-1/2 in x 16 in Bowl Size - DLR1722103 Toilet Paper Type-Jumbo Roll Each shelf is 60 squareinchesThis Elkay Lustertone Top Mount Sink has a single bowl for uninterrupted washing space and a top mount design for drop in installation. Its handcrafted, uniform grain finish helps permit light scratches to naturally blend into sink with time. The type 304 stainless steel helps provide lasting durability. Straight sidewalls give the sink a flat bottom to help offer more usable space for stacking, soaking, and washing dishes as well as make cleaning