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Bayliss MK7 Replacement Spacer Set
Bayliss MK7 Hydraulicheck Auto Vent Opener
Bayliss MK7 Replacement Power Tube
Bayliss MK7 Triple Spring Auto Vent Opener
The Bayliss MK7 adjustment knob, aslo referred to as the knurled adjuster, is used to adjust the opening and closing temperature of the Bayliss opener. Screwing it all the way off disables the vent opener.