Merrychef Rapid High Speed Cook Oven E4SHP.The Merrychef e4s HP Rapid High Speed Cook Oven is a premium commercial rapid cook oven designed for cafs, quick service restaurants, bakeries, convenience stores, hotels, food courts, and hospitality venues requiring ultra fast cooking performance with outstanding food quality and consistency. Combining advanced microwave, convection, and impingement cooking technologies, the e4s HP delivers cooking speeds up to 15 times faster than conventional