Manrose Square Flap Vent White 100mm Product Code: 18561

PVC. Compliant with Part F of the Building Regulations. Suitable for commercial and domestic use with 100mm round or 110 x 54mm rectangular ducting.


  • White
  • W x D x Lg: 140 x 76 x 140mm
  • Channel Width: 100mm
  • Model No: 41012
  • Not Suitable for Use with Gas Appliances
  • Flush Fit


Fixings Not Supplied. Free air space: 14,700mm². Louvre height: 140mm. Louvre width: 140mm.
Additional Information
Technical Specification
  • Brand : Manrose
  • Product Length : 140 mm
  • Product Type : Square Flap Vent
  • Fixings Supplied : Fixings Not Supplied
  • Model No : 41012
  • Product Width : 140 mm
  • Channel Width : 100 mm
  • Colour : White
  • Product Depth : 76 mm
  • Pack Size : 1
  • Manufacturer Guarantee : 1 Year Guarantee
  • Pieces in Pack/Case : 1
Product Contents
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

€2.85 Incl. 20% VAT

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Manrose Square Flap Vent White 100mm is rated 4.0 out of 5 by 13.
Rated 4 out of 5 by from Does the job Easy to fit and is working well at preventing winds blowing in.
Date published: 2014-08-29
Rated 5 out of 5 by from keep out those external smells If i am fitting an extractor fan near where rubbish bins are kept, I tend to fit one of these - and they work. Even in cross winds they seem to stay closed and keep out those transient nasties.
Date published: 2014-07-25
Rated 5 out of 5 by from square vent Spot on for price and dos the job fit was excellent
Date published: 2014-06-23
Rated 5 out of 5 by from Looks and works great. Replaced old broken horrible brown flap with this attractive (for a flap) white one. Screw holes were in the same place so it was an extremely easy job. The back of the flap is configured to slot into both rectangular and round vent hoses - you just snap off the lugs you don't need. My vent hose is rectangular (brick sized) so I snapped off the lugs for the round vent -easily with my fingers - and it just slotted in and screwed into place. The one I got from the store has 3 louvers not 2 as in the photo.
Date published: 2014-06-11
Rated 3 out of 5 by from OK But This flap is like 99% of others in as much as the mounting holes are far too near the hole that the flap covers. I drilled the hole for the duct this one was going to cover with the right size diamond core drill through good brickwork, but as usual when I tried to drill the holes for the mounting screws the edge of the hole in the brickwork broke away. All it needs is a larger mounting flange on the flap so the mounting holes can be further from the hole that it covers. I would be prepared to pay more for the extra material used in a bigger flange.
Date published: 2013-12-04
Rated 2 out of 5 by from Flimsy and weak! Very weak, thin plastic. The tiny hinges holding the flaps on break off really easily during installation.
Date published: 2013-09-24
Rated 4 out of 5 by from Manrose Square White 100mm Fla Nice and cheap does want you it to want,easy to fit
Date published: 2013-03-06
Rated 5 out of 5 by from Perfect Great little product. As mentioned it has three flaps not two as pictured. It fitted perfectly as a direct replacement for the open vent that was there previously. The centres of the screw holes are about 103mm apart. Top tip: mount it with the extractor fan running. Makes it much easier to get the flaps open! It is made of average quality plastic as the previous reviewer said but I can't imagine why it would need to be any stronger and for £2 what do you expect. Will definitely use these again.
Date published: 2013-02-02
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