M&G DuraVent 4" PolyPro Lochinvar Horizontal Termination Kit - 4PPS-HLKL

Thank you for asking us at Plumbersstock.com about the Pfister 974-375! The female end of the thread extension sleeve is 1-1/8" - 18 UNEF - 2B. The male end of the thread extension sleeve is 1-1/8" - 18 UNEF - 2A. To begin the ordering process, please click the Add to Cart button, enter your zipcode and your billing information, and we will take care of the rest. Happy Shopping!

Hello there! Thank you for your interest in the Pfister 974-375 Stem Extension Kit. To know if you have everything that you need to mount your 0X6-150R rough-in valve, please refer to this Installation Guide. According to the Installation Guide, you would need to order extra 974-375 Stem Extentions with 975-015 Long Outlet Tube if the deck thickness exceeds 2-3/4" (70 mm). We hope this helps. Should you have further questions, don't hesitate to ask. PlumbersStock is happy to assist you. Have a great day!