Merriway BH03173 Windows and Door Fully Adjustable Trickle Vent, 260mm (10.4 inch) - White

Good quality item at an excellent price. Only took 5 minutes to install. Comes with both indoor & outdoor vent parts, plus screws for fitting. Measurements are spot on and does exactly what it’s supposed to.

I was very confused at first, then realised the grill went on the outside of the window, I didn't know there was a went on both sides.Very impressed and look really smart, quick delivery as well, and a great price, easy to fit.Thank you

When buying our house we were told it was damp. Over the years great effort was made to seal the house completely, not allowing it to 'breathe' - therein lies the problem. We sought to increase the breathability of the house with passive ventilation - the first of our tactics meant employing the use of trickle vents to get some air running through the house (emulating the single glazed windows of days gone by). These trickle vents suit the purpose well, especially for the cheap price. Instructions are minimal (youtube's good for that though) but all necessary pieces are included to fit them. 2 major things to note:1. It's worth siliconing round the edges when fitting the outside one, in addition to screws, just in case water gets to the exterior holes you made2. On a noisy street, fitting on PVC windows, you'll find more sound permeates due to drolling holes through the window frame. Note these are not acoustic vents, just in case you were wondering :) .Please hit 'yes' below if you found my review helpful :)

Was worried when a building sign off said I should have fitted Trickle Vents on some windows, thinking they would be costly to retrofit, but these were simple. I did not cut slots, only drilled a hole in each gap, which I am sure is enough. Did 3 windows in half an hour.

I bought these trickle vents to retro-fit to a wooden window which was suffering from damp and condensation.Our living room window would often be wet through on winter's mornings, and I decided to increase the passive ventilation in order to correct it. Four drill holes, a couple of cuts with a jigsaw, and I had a small slit in the frame. This vent then screwed over the hole to make it good.Since installation, the level of condensation has decreased considerably, and I'm certainly happy I went down this route. As a bonus, the vent has a hinged flap, which means that you can close it should you wish, e.g. on particularly windy days or, in my case, when your neighbour lights up outside your house.

Good quality but a very slightly off white in colour. Hardly noticeable when fitted.

Fitted and work well but occasionally the slide screw needs nipping up when you feel the door opens and closes too freely.

Delivery was next day, packaged well. Each vent kit is individually wrapped. Very easy to install, which is a good thing as there were no instructions. The colour is good, matching the white of my pvc windows, not cream, like some I've seen.