KT 916 Portable Negative Air Duct Vacuum Extractor

The KT 916 Portable Negative Air Duct Vacuum Extractor restores indoor air quality by creating a powerful, controlled negative pressure zone inside any ventilation system. Despite its compact footprint-roughly the size of a carry-on suitcase-the unit houses a high-efficiency 2 400-watt motor that pulls up to 4 000 m³/h of contaminated air through HEPA filtration, trapping 99.97 % of particles down to 0.3 microns. An integrated pre-filter bag expands the debris capacity to 30 liters, allowing contractors to complete multi-story duct runs without stopping to empty. Quick-connect ports accept 6-inch or 8-inch hoses, while rubber-sealed joints prevent bypass leakage and protect sensitive environments such as hospitals or data centers. The lightweight 27 kg chassis rolls on sealed ball-bearing casters and folds flat into the optional padded storage bag, fitting easily in a service van or maintenance closet. A variable-speed dial reduces suction for delicate flex-duct or maximizes flow for heavy post-construction cleanup, and the universal 110–240 V, 50/60 Hz power supply travels worldwide without adapters. Hospitals, restoration firms and HVAC contractors rely on the KT 916 to isolate contaminants, comply with IAQ standards and deliver visibly cleaner ducts on every job.