Screwfix is selling a JSP power cap at £336. I bought two upon advice, only to find out they don't supply FFP3 filters. We buy from Screwfix regularly. Screwfix has said they will not accept the return as it is out of the 30-day return policy (by several days). I could have bought a manual mask for £20. That would have done a better job. Their dealing with this is horrific, trying to avoid accepting a complaint and making the process difficult to put you off. I'll never buy from this company again. This isn't the first time they've sold me something incorrect. I very rarely leave bad reviews, but they deserve it.