Ventilation box S&P CVAB/4-9000/500N D

KABB/4-3000/315 ventilation boxes. Airtight, self-cleaning ventilation boxes with low noise levels, made with aluminum profiles and sandwich-type panels, featuring non-flammable acoustic insulation (M0) made of 25 mm thick fiberglass, backward curved centrifugal impeller, dynamically balanced, made of aluminum sheet (CvaB-n) or steel (Cvat-n), circular flanges for intake and discharge, IP55 motor, Class F, and built-in thermal protector. Motors: CVAB-N: Adjustable by varying the supply voltage. Single-phase 230v-50Hz operating temperature from -40ºC to +60ºC. CVAT-N: 4 or 6 poles, depending on versions. Adjustable by frequency converter. Three-phase supply voltage 230/400v-50Hz. Thermal protector (PTC).