REGINSmoke Pen Refills
REGIN Smoke Pen Refill Pack (MPN 3KXX4)
The REGIN Smoke Pen Refill Pack (MPN 3KXX4) is a set of refills for smoke pens, designed for use with the REGIN S220 model. It is compatible with Grainger Part Number 3LHW9.
SKU 3G-OTH-70674
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REGIN Products
3G Electric (S) Pte. Ltd. — Singapore
Product Description
The REGIN Smoke Pen Refill Pack (MPN 3KXX4) is a set of refills for smoke pens, designed for use with the REGIN S220 model. It is compatible with Grainger Part Number 3LHW9.
Used in
Common applications for REGINHVAC ductwork leak detection — REGIN S105 smoke cartridge for large duct systems
Clean room airflow verification — REGIN S220 smoke pen for localized directional testing
Exhaust system commissioning — REGIN S104 smoke cartridge for fume hood performance checks
Building envelope air leakage testing — REGIN FP201 smoke bottle for small gaps and seals
Industrial enclosure integrity checks — REGIN smoke pen refills (3KXX4) for repeated use in maintenance
REGIN Products
3G Electric supplies REGIN smoke pen refills. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.





