This genuine OEM Middleby Marshall Belt- Poly-V 370J4 is a perfect fit for the PS636G oven. The belt is made of high-quality materials that ensure durability and long-lasting performance. It is designed to provide reliable and consistent results for all your cooking needs. The California Prop 65 Warning applies to this product, so be sure to consult the link for more information. This belt is compatible with various models of Middleby ovens, including the MD66382.