Large Microwave Fish & Vegetable Steamer Large Microwave Steamer- This microwave steamer makes steaming a complete fish and vegetable meal a snap with its innovative, easy-to-use design. Simply place your items inside the steamer and cook away! An adjustable steam vent ensures a perfect cook every time. Heavy-grade plastic construction ensures durability and functionality. Measures a large 13.2 X 8.5 inches.