A. Type Z, Class 1 Division 2, No Pressure Switch, 0-10 Cu. Ft.

B. Type X, Class 1 Division 1, 120 VAC @ 10 amps, De-energizes Enclosure on loss of Pressure
1. 0-20 Cu. Ft. includes 1" Aluminum Spark Arresting Vent
2. 21-40 Cu. Ft. includes 1" Aluminum Spark Arresting Vent
3. 41-74 Cu. Ft. includes 1" Aluminum Spark Arresting Vent
4. 75-150 Cu. Ft. includes 2" Aluminum Spark Arresting Vent

C. Type Z, Class 1 Division 2, With Pressure Switch for Alarm Contacts, 0-10 Cu. Ft.

D. Type Z, Class 1 Division 2, With Pressure Switch for Alarm Contacts
1. 51-75 Cu. Ft.
2. 75-100 Cu. Ft.

E. Type Z, Class 1 Division 2 With Pressure Switch for Alarm Contacts
1. 10-20 Cu. Ft.
2. 21-30 Cu. Ft.
3. 31-40 Cu. Ft.
4. 41-50 Cu. Ft.

F. Spark Arresting Vent