Whenever i fitted a composite door it always seemed to be an IG door, very fitter friendly, good quality and never had a problem, im sure theres others but i only have experience of these
Mainly use Homesafe as they have achieved Secured by Design! and for myself its a good selling point.
Knowing your in blackpool, If you try Rockdoor (Gap) @ Blackburn they also have Secured by design and you can pick one up there from around 500 - 800 ish!
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