T5 Transporter Side Window Vent Cover Rain Shield Guard For Camper Van Motor Home

Great product but spoilled by the sides not laying flat against the window

I am pleased to say that for my 2012 T5 LWB campervan the sizing was great as they fitted with a good few mm to spare. I am impressed with the quality of the vents. I cleaned the windows thoroughly beforehand using rubbing alcohol and warmed the glue strips with a hair dryer. The top edge adhered pretty well and remained so. The sides however gradually peeled away towards the edges leaving little of the glue strip in contact. Pressing the sides against the window and warming them improved the adherence but this was only temporary as they slowly pulled away again leaving only about 2mm of the outside edge adhering in places with no section of the strip achieving more than half-width contact. It appears that the side edges of the vent do not lay flat against the windows but are slightly angled causing this to happen. I just hope that this doesn’t progress to allow rainwater to leak through or even worse, for a vent to detach due to wind force whilst driving.