Universal Stopper without Horn Housing Enclosed Back Box Sealed Mounting Plate, No Label, Blue

Universal Stopper with Horn Enclosed Back Box Sealed Mounting Plate, Fire, Red

Universal Stopper with Horn & Relay Enclosed Back Box Sealed Mounting Plate, No Label, Red

Universal Stopper with Horn & Relay Enclosed Back Box Sealed Mounting Plate, No Label Included, White

Universal Stopper without Horn Housing Enclosed Back Box Open Mounting Plate, No Label, Blue

Universal Stopper without Horn Enclosed Back Box Open Mounting Plate, No Label, Blue