Product Information
- Fully automatic-opening active door retracts top and bottom bolts
- Low closing force
- Automatically locks inactive door under high heat condition
- UL 3hrs fire rated for use on metal covered fire door up to 4ft wide and 8ft high
- Use in pairs at top and bottom for inactive door
- Adjustable bolt head
- Suggested using 9278 Dust Proof Strike to prevent dirt blocking bottom strike
- Design confirms to ANSI / BHMA A156.3 Type 25