A two-way speaker with steerable/adjustable aluminium inverted (concave) 25mm dome tweeter and 130mm glass-fibre woofer, the IC105 is a superb performer for a very reasonable price. It has a combination of efficiency at 88dB and impedance 8ohms which will not give your amplifier any palpitations. With an installation depth of just 85mm it is suitable even where clearances are tight. Removable badges assist when painting over to match ceiling colour, and they are suitable for use even in damp environments. The concave tweeter used by Focal gives wide dispersion of sound, always a plus in this style of speaker.
Cutout size is 165mm, total diameter 200mm, total depth 101mm, depth required in ceiling 85mm.