- Single Hinged
- One Single Hinged System Is Available
- Single Stud Bolt Is Used In Hinged System
- Single Hinged System Provides Cover/Grates at 120° Opening
- Single Hinged Cover to 120°
- Hinged System Prevents Unauthorized Use
- Manuel Locking
- Three Bolts Locking System Available
- Three Single bolts are Used In Manual Locking System
- Locking System Prevents Unauthorized Use