Temporarily out of stock
Out of stock

MK7 Hydraulicheck Autovent Bayliss Opener


The mechanism comes with a piston, hinge, and hardware for mounting on the crossbar. 

Bayliss vent openers are heat-activated and require no electricity to operate. Proper air circulation and ventilation are imperative to grow high-quality produce year-round. A bent, broken, or worn-out vent opener can invite pests and disease; always check to ensure that your vents are opening and closing properly. Often, a malfunctioning opener can be brought back to life by replacing the pistons. We can help you diagnose the cause of failure if your vents are not opening.


Opens between 55-65 degrees Fahrenheit. Maximum opening distance of 12 inches.

The small hydraulic damper which Bayliss calls ‘hydraulicheck’ added to the MK7 Autovent makes it suitable for use in severe weather conditions. 

15' Dome: Upper vent

18' Dome: Both lower vents

22' Dome: Both upper vents

26' Dome: Both lower vents

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Pickup available at Pagosa Springs Facility

Usually ready in 5+ days

MK7 Hydraulicheck Autovent Bayliss Opener

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