DR21 air vents DR21, 12 W, Black

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Remove the standard louvered vent – you may need to unscrew some screws to do this, or break the sealant seal depending on how it has been fitted. Your DR21 vent cap also comes with comprehensive fitting instructions, we have these available for online viewing here: DR21 Fitting Instructions The DR21 air vent is affordable enough to form part of any standard quote and its draft reducing qualities and modern look can be used to upsell customers to a higher-powered stove than they might otherwise have bought. Presumably by having 6inch wide holes that cannot be properly shut in so many rooms of our house, making it draughty, we run the risk of childhood TB and rheumatism and constant chest infections?

Hi, we had an extension built earlier this year. Per building regulations, we had extractor fans installed in each new bathroom, cloakroom and utility. Each extractor has its own electrical isolator switch and, to be honest, we usually leave them permanently off. The solid tubing kit contains a DR21 air vent, an interior vent cover and a piece of solid tubing to go through the wall. Use this kit when you intend to use a 4" core drill to drill a straight hole through a wall. Peter, you say that one would normally only open a window in warm weather. This is exactly my point, though. The nature of these extractors and the external vents is such that I effectively have a hole the size of a transom window open PERMANENTLY in several rooms of my house, since the extractors cannot properly be closed.It cannot be used on a kitchen extractor fan and the fat in the air will rapidly clog the interior. vii. In newer properties and in older properties with a stove being installed with an output of over 5kw then an air vent is required. We have a 60-day return policy, which means you have 60 days after receiving your item to return it.

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. Smaller items will be delivered using Royal Mail 24. Larger items delivered via FedEx or ParcelForce. In brief this is caused by the mechanism of combustion. Fuel only burns when given a heat source in oxygen. So, as fuel is burned, oxygen in the area surrounding the fuel source is ”used up” by the mechanism of combustion, this then needs to be replaced. The reaction then pulls more oxygen into the area to replace the ”used up” oxygen – when this ocurrs in appliances, air is pulled in via the vent to do this. So, the rate of airflow in through the vent will automatically meet the demands for the appliance, regardless of the vent style.

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I had thought of simply putting some tape over the vents on the outside, just to seal them shut. Since we have a pebbledash render on the walls, it seemed easier, and maybe more effective, than fitting a cowl like this:

If you already have a stove which is over 5kw installed it should, by law, have an air vent. It will not work efficiently without one as it will be struggling for air. All I'm asking is whether there is a safe and simple method of stopping the cheap bits of plastic that pass for external covers on these things from rattling like a banshee whenever a squirrel farts in the woods to the side of my house. vi. In old properties is considered that there is enough ?leakage? so that a stove of up to 5kw does not require an air vent.

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iv. It would be harmful to burn the oxygen from a room without replacing it with fresh air from outside.