5" x 4" Schedule 40 Stainless Steel Weld 304/L Concentric Reducer length_10" accurate threads are machined that

accurate threads are machined that comply with the precise standards developed by the Amerian Society of Mechanical Engineers (ASME) and published as an American National Standard

Iron samples are continuously analyzed using spectroscopy to conform the material quality

material:    Copper Features:    Made in the USA    Lightweight and Strong    IAPMO approved    ANSI approved

material:   Brass - Lead Free connection:   Threaded Thread Type:   Female Features:   Meets or exceeds all applicable ANSI standards   100% pressure tested before leaving the factory

and Vent Pipe

5" x 4" Schedule 40 Stainless Steel Weld 304/L Concentric Reducer length_10" accurate threads are machined thatmaterial: Stainless Steel connection: Butt Weld Features: Stainless weld fittings conform to ASTM A403 Grade 304 304L & 316 316L,ASTM A960, MSS SP 43i Stainless weld fitting dimensions conform to ASTM B16. 9 (except Wall) and MSS SP 43 Manufacturing facility is ISO 9001: 2008 Independent lab verification that fittings meet applicable chemical & mechanical properties