NIKRO SL4000 Air Duct Cleaning System (Dual Motor)

NIKRO SL4000 Narrow-Cabinet Dual-Motor Duct Vacuum

The SL4000 is a 115V dual-motor duct cleaning system with 20-inch-wide cabinets that fit through tight doorways and down narrow basement stairs. It moves 5,000 CFM of free air through a 3-stage filter train and breaks into three sections for transport. Each motor runs on its own 115V, 10-amp plug.

SL4000 Narrow-Cabinet Extraction and Filtration

The 20-inch cabinets keep the same 5,000 CFM airflow as the wider systems while clearing doorframes and stairwells that block a bulkier frame. Two backward-incline blowers pull debris out, and the 99.97% HEPA final stage holds it inside. The narrow footprint does not change how the system connects; the crew joins the three cabinets in line, attaches the duct hose, and runs the same 3-stage path to the HEPA.

• 5,000 CFM free air across dual backward-incline blowers for residential and light commercial ducts
• 5" static pressure to sustain airflow on longer runs
• Two 115V/10A motors on separate plugs off two standard circuits
• 3-stage filtration ending in a 99.97% HEPA element for fine dust and mold spores
• 20-inch-wide motor, center, and primary cabinets that clear standard doorways
• Three-section build at 233 lbs assembled for stair and tight-access transport

SL4000 Applications and Environments

Duct-cleaning contractors reach for the SL4000 in older homes, condos, apartments, and finished basements where doorways and stairwells are narrow. The 20-inch cabinets pass through spaces that stop a 26-inch system, and the three-section split lets a two-person crew carry each cabinet separately. Restoration crews use it in occupied buildings and tenant units after water or fire loss, clearing supply and return runs before the air handler goes back online. In tenant-occupied work, the smaller cabinets also stage in a hallway or closet without blocking the space, which keeps the unit close to the air handler on cramped floor plans.

Specifications