M-PACT LAV RGH-IN 8-16 CNTR 1/

🚰 What it is

It’s the hidden valve body installed behind the sink wall or countertop that controls water flow for a widespread 2-handle bathroom faucet.

⚙️ What the code means

• M-PACT → Moen’s modular system that lets you change faucet styles without replacing plumbing
• LAV → Lavatory (bathroom sink faucet system)
• RGH-IN → Rough-in valve (installed behind the wall/counter)
• 8–16 CNTR → 8" to 16" center spread (distance between hot and cold handles)
• 1/ → typically shorthand for 1/2" IPS connection (water supply size)

🔧 What it does

This valve:

• Sits under the sink or behind the wall
• Connects hot and cold water lines
• Controls flow to a widespread 2-handle faucet
• Allows future faucet upgrades without changing plumbing (M-PACT system)

🏠 Where it’s used

• Bathroom sinks with 3-hole widespread faucets
• New construction or remodels
• Moen faucet systems designed for interchangeable trims

🧠 Simple explanation

It’s the hidden plumbing base that everything connects to under your bathroom sink, designed so you can later swap faucet styles without redoing the plumbing.