Product description
The LCN 4040 Closer Screw Pack (4040XP-TBSRT 689) controls the speed and force of the door as it opens and closes, ensuring smooth, code-compliant operation. Installing the correct door operator/closer restores proper function and helps avoid downstream wear on adjacent components.
Product highlights
- Direct Fit Engineering: Manufactured to the same specifications as LCN 4040XP-TBSRT 689 for a precise, drop-in replacement.
- Correct Function: Restores the original operation of the door operator/closer, matching OEM fit and performance for a commercial door or access control assembly.
- Durable Construction: Built to withstand the operating stresses typical of a commercial door or access control assembly.
- Designed in the USA: Engineered to meet or exceed OEM specifications in the USA.
Specs
- Manufacturer: LCN
- Manufacturer Part Number: 4040XP-TBSRT 689
- Component Type: Door Operator/Closer
Direct replacement models
- LCN: 4040XP-TBSRT 689
- Fits: LCN equipment using this part number, including compatible commercial door or access control assembly models.
You will receive the same product or an OEM-Equivalent that meets the highest standard of the OEM with warranty that will be a direct-fit. Designed in the USA with superior quality to the OEM.








