7738003238 | Vent Extension Concentric 10 Inch Polypropylene for Greenstar 80/125 | Bosch Inlet/Outlet Connection_1IN FNPT 8 lbs Benefits: - Self-aligning

8 lbs Benefits: - Self-aligning screen design for maximum protection - Optional blowout ball valve for convenient maintenance - Made in the USA

here is a product description for the Jergens - 46921

it's designed to provide a secure hold in various industrial applications

With its 5/16-18 tapped hole

00 SS is a high-quality stainless steel locking pin with a ring handle

7738003238 | Vent Extension Concentric 10 Inch Polypropylene for Greenstar 80/125 | Bosch Inlet/Outlet Connection_1IN FNPT 8 lbs Benefits: - Self-aligningBosch Vent Extension Concentric 10 Inch Polypropylene for Greenstar 80 125 Vent Extension Concentric 10 Inch Polypropylene for Greenstar 80 125 by Bosch. This extension is made of durable polypropylene and is designed for use with the Greenstar 80 125 water heater. It extends the length of the vent by 10 inches, providing additional clearance for installation in tight spaces. The extension is easy to install and comes with all necessary hardware.