Searching for a half sheet pan? CateringSuppliesDepot.com carries bakeware from commercial suppliers such as Lincoln, Carlisle, and Thunder Group. A half sheet pan measures 13" x 18" making it small enough for residential use. What many consumers don't realize is that a full size sheet pan is too large for residential ovens. That's what makes the half sheet pan our most popular size - it's small enough for home use but large enough for commercial applications.