Master Flow | sku: 3570319 Master Flow 10 In. To 8 In. Round Reducer The Master Flow 10 in. x 8 in. Round Reducer is made of galvanized steel. It features hemmed collar edges for enhanced strength and a secure fit. The reducer is used to transition from a 10 in. pipe to a 8 in. pipe in an HVAC system. It is suitable for... Log in for pricing