YBS Anti-Downdraught Chimney Cowl Aluminium & Stainless Steel 140 x 310mm Product Code: 67341

Aluminium and stainless steel. Aerodynamically designed and tested to combat the effects of poor drawing chimneys caused by downdraughts. No specialist tools required for installation. Suitable for use with gas, seasoned wood, normal coal and oil. Unsuitable for smokeless fuel applications. Where coal or seasoned wood are burned the mesh birdguard needs to be removed.


Fits chimney pots up to 280mm external diameter. Fixings Supplied. H x D: 140 x 310mm. Weight 1.0kg. BS 715: 1993, BS EN 1856-1: 2003 report 19933/1.
Additional Information
Technical Specification
  • Brand : YBS
  • Product Height : 140 mm
  • Product Type : Anti-Downdraught Chimney Cowl
  • Fixings Supplied : Fixings Supplied
  • Total Product Weight : 1.0 kg
  • Construction Material (Building) : Aluminium & Stainless Steel
  • Product Depth : 310 mm
  • Pack Size : 1
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
Product Contents
Chimney cowl with strap.
Delivery & Returns


Standard delivery: €15

Free delivery on all orders over €70.00

Click here to see information on our delivery charges and times



Hopefully you won't need to return an item, however, if you do, it is our aim to make this as simple as possible. By following the guidance below you can help us to help you when a product is not what you expected, or is faulty. Your statutory rights are not affected by this guidance.


Click here to see information on returns and cancellation

€91.95 Incl. 20% VAT

Add to Wishlist

More Items to Consider

Loading... Loading...
YBS Anti-Downdraught Chimney Cowl Aluminium & Stainless Steel 140 x 310mm is rated 3.8 out of 5 by 5.
Rated 5 out of 5 by from Functional Initially surprised by size but pleased that it was adjustable so fitted perfectly. Nice terracotta finish and, so far, would seem to be doing the job.
Date published: 2019-02-18
Rated 4 out of 5 by from Does the job Easy to assemble and fit, greatly reduces downdrafts and stops water ingress
Date published: 2019-01-05
Rated 1 out of 5 by from Useless for downdraughts I bought one of these instead of the rotating anti-downdraught cowls that are a good deal more expensive. This cowl made no difference at all to the downdraught of the constant "bonfire" smell in the room when the stove wasn't in use - when I put my hand at the bottom of the chimney the downdraught could easily be fealt on the skin. I landed up taking this one off and putting a spinning cowl and it the smoke smell went within 24 hours. There doesn't appear to be any downdraught at all with the new one fitted.
Date published: 2016-05-05
Rated 4 out of 5 by from Capped chimney I bought two of these to stop water entering the property. They look good and are easy to fit. I would recommend attaching the straps before climbing on to the roof. Make sure you use roof ladders over the apex for maximum safety.
Date published: 2015-10-05
Rated 5 out of 5 by from Chimeny cowl Having suffered with rain getting down the chimney and into our woodburner, we decided to fit a cowl to the chimeny pot and remove the anti-bird wire basket we had in place. Having hunted around for something suitable, we came accross this item in screwfix and one was ordered for collection the following day from our local branch. It is very easy to install, if you don't mind heights and removing your hand from the ladder to fix! A sturdy jubilee clip fits around your pot's diameter and secures the cowl in place. It seems durable, well finished and will fit a wide variety of pot diameters. On ours it sits on top of the pot, but for those with a smaller diameter pot it will sit over it without any problem. All in all a good item at a reasonable price, that will keep the birds off and keep the majority of rain out too.
Date published: 2012-12-21
  • y_2019, m_9, d_18, h_7
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.13
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_5
  • loc_en_GB, sid_67341, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix-ie