I had barely any information regarding my central vac system, and he was able to get me the exact right part I needed to repair my system.
Standard 1 3/8" Hose
This hose is a "High Performance" (1 3/8" diameter) 30' hose with a smooth inner wall which allows for 20% more airflow than 1 1/4" hoses. It has full 360 deg. swivel feature with suction regulator. The wall end features the cuff with a metal band to activate particular style wall valves. This type of cuff helps reduce nicking floors and furniture than those with full metal end