Velux KFC 310

VELUX Smoke vent window control units are available in two sizes: 5A (KFC 305) or 10A (KFC 310). Both include emergency power supply for at least 72 hours. Smoke vent window control system KFC 305 (5A) controls up to: 2 x Smoke vent windows for pitched roofs GGU/GGL or 1 x VELUX glass flat rooflight CVP/CXU and KFX 310 controls up to: 4 x Smoke vent windows for pitched roofs GGU/GGL or 1 x VELUX glass flat rooflight CVP/CXU