HD66 HEAVY DUTY, SURFACE OVERHEAD STOP
Usually Ships: 1-3 Business Days
The Cal-Royal HD66 Heavy Duty Surface Overhead Stop is a premium-grade door control solution engineered for high-traffic, heavy-abuse environments. Designed with a robust slide track mechanism and a heavy shock absorber spring that compresses 5–7° before reaching the dead stop, this overhead stop ensures smooth and secure door operation. Ideal for both interior and exterior single-acting doors, the HD66 is non-handed and UL Listed for up to 3 hours (stop function only), meeting ANSI A156.8 standards. Its durable satin stainless steel finish (US32D) and complete installation kit—including thru-bolts, wood, and machine screws—make it a reliable and easy-to-install choice for commercial and institutional applications. Optimize your facility’s safety and performance with the trusted strength of Cal-Royal’s HD66 overhead stop.
- Interior or exterior doors
- Doors are single acting
- Non-handed
- Recommended for high traffic, heavy abuse installations
Features
- Heavy duty surface
- Slide track design
- Heavy shock absorber spring provides 5-7° compression before deadstop
- Stop or hold-open function
- Complete screw packet with thru-bolts for door, wood and machine screws for frame
- Durable slider cam
- 110° maximum opening
- 1 3⁄4" minimum door thickness
- 1 3⁄16" square channel
Compliance
- ANSI A156.8 UL Listed as STOP Function
