Ltpgtdimplex x1s 1kw silver optiflame fireltpgt ltulgt ltligt1kw inset or freestanding fire with unique optiflame effectltligt ltligtflame effect can be used independently of heat sourceltligt ltligtelectronic thermostatic control giving highly accurate room temperature controlltligt ltligtdesigned to fit 16 inches and 18 inches fireplaces and all conventional fluesltligt ltligtfits flat to wall with 70mm spacer includedltligt ltlig