Crompton darksky 22 years on!

Well it’s safe to say these flood lights last generally longer than most LED as the brackets will be rusted out of them way before this, but these are terrible fittings. What do you do if you get a callout to this not working? Bare in mind I am in wadebridge no wholesalers around and screws seized solid. It really pisses me off as all these manufacturers needed to do was add the smallest bit of grease to each screw and it would never ever be a problem again you would be able to access it.