Deta Vimark 4666 6" (150mm) Axial Extractor Fan with Humidistat & Shutter

The Deta Vimark 4666 extractor fan is designed to deliver powerful ventilation with added automatic humidity control. With an airflow capacity of 71 litres per second (255m³/hour) and a quiet operating level of just 35dB @ 3m, it ensures effective extraction for larger bathrooms, kitchens, and utility rooms. This model features an integrated humidistat, adjustable between 60–90% RH, which automatically activates the fan when moisture levels rise. It also includes shutters to prevent backdraughts and improve energy efficiency. The unit offers user-adjustable overrun timing (2–30 minutes) for continued ventilation after use. Slim in profile and suitable for through-wall applications or ducting runs under 2m, the 4666 is fitted with a one-shot thermal fuse for safety. Fully compliant with BS EN 60335-2-80 and Building Regulations Approved Documents F & L1, it comes with a 3-year manufacturer’s guarantee.

Key Features

• Slim, modern profile with quiet and efficient operation
• Extraction rate: 71 l/s (255m³/hour)
• Noise level: 35dB @ 3m
• Specific fan power: 0.40 W/l/s
• Integrated humidistat (adjustable 60–90% RH)
• User-adjustable overrun timer (2–30 minutes)
• Complete with shutters to prevent backdraughts
• Ideal for through-wall installations or ducting runs under 2m
• Fitted with a one-shot thermal fuse for added safety
• Complies with BS EN 60335-2-80 safety standards
• Meets Building Regulations Approved Documents F & L1
• Backed by a 3-year manufacturer’s guarantee

Technical Documentation

Download the Deta Vimark 4666 Data Sheet (PDF)

Instruction Manual

Download the Deta Vimark 4666 Instruction Manual (PDF)