WRT519SZDG04 Whirlpool Refrigerator - Parts

The control knob controls the cold airflow from the freezer compartment into the refrigerator compartment.

Sold individually.

Crisper glass Shelf (lower) Approximately 25.42" x 16.33"

This cabinet roller supports smooth movement of the appliance or internal components by reducing strain and maintaining alignment. It is commonly replaced when rolling becomes difficult, uneven, or noisy.