DR21 air vents DR21, 12 W, Black

Product Information

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. 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. 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.

If it’s a 100mm louvred vent then the DR21 air just slots over where the old vent cover is, and if it’s the standard plastic vent cover, even the holes are in the same place.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. Vent caps work best in conjunction with other draught exclusion measures to keep your home warm and comfortable. Take a look at our other draught excluders range to get an idea of some more cost effective ways to keep your home efficient and cosy, as well as reduce those rising energy bills. You may also like… This does affect young children and there some research that it can be one of the causes of childhood asthma."

We have a 60-day return policy, which means you have 60 days after receiving your item to return it.

Financial statements of DR21 LTD

Have none of you people heard of windows? Windows are natural ventilation and have the added advantage of not using extra electricity. So far as I can tell, my 70 year old house has survived the first 69 years of its life without extractor vents, probably because its owners understood about windows. I am fully aware of the problems of humidity, I just don't need some idiotic and expensive ventilation system treating me like an idiot and making a noise in my ensuite bathroom, when it's right next to a perfectly serviceable window. If I wanted that, I'd live in a hotel. Now carefully glue the second magnet to the section of the cowl that you screw to the wall. Carefully aligning both magnets and ensuring you have the second magnet the right way round to attract the first magnet rather then repel. The Magnets should not touch or the attraction will be too strong for the flap to open when the extractor unit starts. Replacing underfloor air vents which will stop a draught blowing under your floor, while allowing enough air for the vital ventilation. 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. DR21 Ltd is a family business, run out of my home-town of Knutsford, Cheshire. We’re a small company, but our product is made entirely in England and is manufactured ISO 9001:2015 standards. It was independently tested on the 24th October 2016 by BRE, one of the major facilities in the UK, and subsequently approved by HETAS.