This is a great item if you need to fit intumescent to a door and either do not want to route it, or do not have the tools to enable you to fit the routed in version. There is an alcohol wipe provided in the box to clean the frame down, then you just cut the strip to length, peel of the backing and stick it on. The glue sets in 24 hours and it is suitable for 2-4mm gaps. It made what would have been an hour to an hour and a half job into a 15 minute job. Extremely impressed with this product and will use it again.
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