Pizza warmers feature special round shelves and pizza signage to assist your merchandising efforts. You will want to consider the service style, overall dimensions and whether or not there is controlled humidity when searching for a cabinet. The overall dimensions of the pizza warmer (especially the width and depth) are critical in determining how much countertop space you will need. How you intend to serve the pizza to the customers is important, too. Full-service warmers only have access doors in the back of the cabinet, so the employee will have to dish up each slice. Self-serve units have access in the front and back, so customers can grab their own product in the front while workers restock form the rear.
Cabinets that are fully enclosed can have either dry heat or add a little bit of humidity to the air. Warmers with controlled humidity help increase the products shelf life and ability to be sold, because nobody wants to buy a pizza that looks like cardboard. Chances are, that is what it will taste like, too.