A 30" Whirlpool top freezer refrigerator typically offers around 18-19 cubic feet of total storage space, with a separate freezer compartment on top. Key features include adjustable glass shelves, humidity-controlled crispers, and a Flexi-Slide bin for flexible storage. It also may include features like LED interior lighting and optional ice maker compatibility. 
Key Specifications:
Capacity: 18-19 cubic feet (510-538 liters)
Width: 30 inches (76.2 cm)
Freezer Capacity: Approximately 5-5.1 cubic feet (142-144 liters)
Shelving: Adjustable glass shelves in the refrigerator and a fixed glass shelf in the freezer.
Humidity-Controlled Crispers: Two half-width crispers for storing fruits and vegetables.
Flexi-Slide Bin: A movable bin for flexible storage.
Lighting: LED interior lighting for better visibility.
Defrost: Automatic defrost.
Icemaker: Optional EZ Connect icemaker kit available.
Temperature Control: Up-front electronic controls.