These Corsica Light Grey Glazed 1 light Fire doors are manufactured using a colour impregnated real wood veneer, which is then sprayed with a clear stain lacquer to bring out the natural beauty in an open grain. The 44mm FD30 is manufactured using a solid particle board core making them truly heavyweight. The doors have V grooves painted light grey to bring out the real wood veneers on the door faces themselves. The FD30 44mm thick doors have an 18mm lipping allowing them to be trimmed more. Supplied fully factory decorated in a clear stain lacquer. The Corsica Grey Glazed 1 Light door is supplied with clear toughened glass as standard.