This is a DrainVac Central Vacuum compatible vacuum product.
Got a noisy vacuum unit? Take the sting out of the exhaust sound by using this high quality made muffler. Works on exhaust ports that are 2 inch in diameter and you will need one per exhaust port.
Don’t be fooled by cheap mufflers that won’t last long.
Do NOT run two exhaust ports into one muffler, you will need two mufflers for that application.
Requires a 90 degree spigot sweep “L” part # NST103 per muffler.