Aircone Vent DR21

The Aircone Vent DR21's 4”, 100mm hole does not require a straight drilling through a wall. A pilot hole can be used to drill from both sides. This saves time and reduces strain on the drill. It also allows for easier drilling through damp walls without risking damage to the surface.

• The vent has the same fixing holes as a standard louvred vent, so retro fitting one takes minutes, and it accepts all the standard tubes, ducting etc.
• It has a free air equivalent of 3400 sq mm, OK for a stove up to just under 12kw (if you include leakage 12 kw is fine) which covers most stoves fitted.
• It has been independently tested by Bre, and is approved by HETAS.
• It is patent protected and produced to ISA 9000:2015 standards entirely in the UK.
• It can be fitted over an existing 100mm hole, a 127mm hole or a 9” air brick.
• It cannot be used on a kitchen extractor fan and the fat in the air will rapidly clog the interior.
• It can be used for stoves up to 12kw, one could use two for larger stoves.
• It can replace the rattling bathroom vents, passive air vents and underfloor air bricks.

Experts recommend using at least three gas vents for optimal ventilation, but even just two vents are preferable to a blocked duct tape-ridden old vent. According to industry standards, a gas or open fire requires 10,000 sq mm of ventilation, but when considering the size of the needed baffle device, the effective Free Air area is reduced to 7800 sq mm from the original 127mm hole. 

The Aircone Vent DR21 features zig zag baffles within a 127mm diameter hole, providing a Free Air Equivalent of 2200 sq mm.