DR21 air vents DR21, 12 W, Black

Product Information

A relative of mine converted an old house into flats and put bathrooms in some basements. This room had the required plastic lining, with concrete shell inside, lined with plaster. For reasons too peculiar to go into, the owner of this flat refused to open her window, (there was no extractor fitted, since the conversion predated these being mandated) for SEVEN years, meaning that the room was basically sealed for that whole time. After that period the room DID become damp and the plaster developed mould. We get a lot of customers complaining about the draught that comes through air vents. The air vent is there to provide enough oxygen for your appliances when they are burning fuel. If they don’t get enough oxygen they produce carbon monoxide which is a killer. So the air vent is pretty useful when you’ve got a fire lit. But what about all the rest of the time, when the fire isn’t lit and there’s still a howling gale blowing through? Wouldn’t it be great to have something that restricted the air flow and prevented those annoying draughts? Ta daaa! We introduce the DR21, invented by David Gattie, a stove fitter with customers putting just such a complaint to him on a regular basis. Anyway, I would like to put a stop to this rattling and also stop the constant drafts coming from them. We are unlikely to use them, but I don't necessarily want to permanently disable them. Can anyone suggest some good ideas to help with this? We have a 60-day return policy, which means you have 60 days after receiving your item to return it. This does affect young children and there some research that it can be one of the causes of childhood asthma."

The DR21 a ir vent can be retro-fitted in minutes and can give you an added income stream when you carry out your annual service.

Replacing underfloor air vents which will stop a draught blowing under your floor, while allowing enough air for the vital ventilation. Replacing a bathroom vent, such as the one with the flaps which rattle all night. Should be a straight swap.

Your DR21 vent cap also comes with comprehensive fitting instructions, we have these available for online viewing here: DR21 Fitting InstructionsThe hole is 100mm, and yet the free air equivalent is 3400 sq mm. This is because the air vent sits on the outside of the wall, and does not reduce the size of the hole through the wall. A standard vent (also known as a louvered vent) allows cold air to blow straight through the wall. Fitting a DR21 disrupts this airflow, but not in a negative way. The DR21 vent cover prevents the air from blowing straight in, instead it travels through a zig zag system which significantly slows the airflow rate. However, if you light a fire or fuel burning appliance the rate of airflow increases to meet the demand of the appliance. The unique DR21 vent is the solution ? this new product allows only the air that is needed to enter your room. Even a high wind or forced air won?t be a problem as shown in the video. At ?29.99 our unique patented vent will pay for itself in no time, as you won?t need to try harder to heat a draughty room.