
LOX Heavy Duty 12VDC Magnetic Door Holder Wall Mounted – White
The LOX L35770 magnetic door holder is designed for fire and smoke doors that must be held open during normal operation and released when power is interrupted via the building fire or smoke alarm system.
Key Features
- Wall mounted magnetic door holder for fire and smoke doors.
- 4 hour fire rated.
- Up to 40 kg holding force.
- 12 V DC operation.
- Push button manual release.
- Designed for integration with building fire or smoke alarm systems.
- Heavy duty construction for commercial applications.
Specifications
| Property | Value |
|---|---|
| Item Code | L35770 |
| Brand | LOX |
| Working Voltage | 12 V DC |
| Current | 100 mA @ 12 V DC |
| Holding Strength | 40 kg |
| Monitoring | Non-Monitored |
| Fire Rated | Yes, 4 Hours |
| Finish | White |
What’s In The Box
- 1 × LOX magnetic door holder (wall mount)
- 1 × Armature plate
- Mounting hardware
Suitable Uses
- Fire and smoke doors that must be held open during normal operation.
- Commercial buildings where doors are released by the fire or smoke alarm system.
- Schools, hospitals, public buildings, and high traffic corridors.
Dimensions

| Measurement | Size |
|---|---|
| Depth | 50 mm |
| Width | 74 mm |
| Height | 115 mm |
Item Code Family
| Item Code | Working Voltage | Current | Holding Strength | Fire Rated | Notes |
|---|---|---|---|---|---|
| This Model: L35770 | |||||
| L35770 | 12 V DC | 100 mA @ 12 V DC | 40 kg | Yes, 4 Hours | Wall mounted model |
| L35770150S90 | 12 / 24 V DC | 140 mA @ 12 V DC, 70 mA @ 24 V DC | 50 kg | No | 150 mm extension, swivel head wall or floor mounting |
PDF Resources
Frequently Asked Questions
- Is this door holder suitable for fire doors?
Yes. This model is fire rated to 4 hours. - Does it need to be connected to a fire alarm system?
It is designed for applications where the door holder releases when power is interrupted via the building fire or smoke alarm system. - Is there a 12 / 24 V option?
Yes. The extension series option listed in the item code family supports 12 / 24 V DC.
Additional Information
- Includes a push button door release for manual override.
- Heavy duty floor mount box is available separately: L35772.