The Chamberlain ® Whisper Drive ® 1/2 HP Belt Drive garage door opener is the ultimate in quiet performance. It features our exclusive Motor Vibration Isolation System (MVIS ®) ‚¬â€œ which eliminates powerhead vibration for reduced noise ‚¬â€œ making it the ideal choice if you have rooms positioned above the garage. And the 1/2 HP heavy-duty motor offers steady performance and lifting power year after year.
