Trolley-type garage door opener from Garaga

Opener models		cycles per day
	PATS	less than 25
	PMT	less than 50
	PT	less than 80
	PGT	more than 80
	PAPT	more than 100

Trolley Operators from LiftMaster

Opener models		Highlights
	Model APT	Apartment Trolley
	Model ATS	Light Duty
	Model GT	Heavy Duty
	Model MT	Medium Duty
	Model T	Industrial Duty