The Manthorpe G630 Felt Lap Vent is a white polypropylene vent designed for lofts, attics, and roofs. Made by the trusted brand ManThorpe, this model is ideal for DIY roofing projects and ensures proper ventilation in your home. I brought 50 and only used 27, hence the 23 in a box for sale. They are easy to fit and have removed the condensation in my loft completely
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