Heavy - (of slumber) deep and total; "a heavy snooze"; "fell right into a profound snooze"; "a sound sleeper"; "deep wakeless slumber" Alerts with the AFP or when a sharp rise in temperature exceeding the trip setpoint is detected, activate the pneumatic or electric powered actuators to shut the damper https://heavy-duty-stainless-stee68901.glifeblog.com/35855331/an-unbiased-view-of-heavy-duty-stainless-steel-damper-manufacturers