Product Description
LCN 4631 Cylinder Assembly in Aluminum
Replacement Cylinder Assembly for the LCN 4631 Series commercial door closer. Genuine LCN OEM part — matches factory specifications for fit and performance. If your 4631 closer needs a new Cylinder Assembly, this is the correct part.
Pro-Tip from Our Locksmiths: Cylinder assemblies control the speed valves — if your closer is slamming or creeping, the cylinder assembly is usually the fix. Full body replacement is overkill when it's just the hydraulics.
| Brand | LCN (Allegion) |
| Part Number | 4631-3971-AL |
| Series | LCN 4631 |
| Component | Cylinder Assembly |
| Finish | Aluminum |
| Fire Rating | Non Fire Rated |
| Warranty | 3 years limited manufacturer's warranty |
- Genuine LCN OEM replacement for 4631 Series closers
- Finish: Aluminum — matches factory original
- Ships brand new in LCN packaging
- Compatible with LCN 4631 closer bodies
Works With: LCN 4631 Series door closers. For complete closers, covers, and other replacement parts, search LCN 4631 on our site.
Image shown is representative of the product line. Actual finish, trim, and configuration may vary by SKU.
Warranty Information
Limited lifetime warranty on closer bodyProduct Videos
Custom Field
Series 4631
Finish Aluminum
Trim Cylinder Assembly
Monitoring Non-Handed
Mode Single Door
Product Type Part / Accessory
Fire Rated Non Fire Rated
