A roof window comprising a sash and a frame adapted for receiving said sash , said sash being configured to pivot around a pivot axis (A) so as to open said sash towards an outer side of said window, said sash optionally being suspended from said frame by means of suspension arms , each optional suspension arm extending at least partially between said sash and said frame , said roof window further comprising: at least one actuator adapted for pivoting said sash in relation to said frame against a load (L) of said sash , said load (L) mainly being caused by the weight of said sash , said actuator comprising a push-pull chain and a bracket , said bracket being rigidly connected to a first end of said push-pull chain , a second end of said push-pull chain being received in an actuator housing connected to said frame , said push-pull chain being adapted for bending freely in a first direction (D1), past a configuration in which said push-pull chain forms a straight line , and only to a limited extent past said straight line configuration in a second opposite direction (D2), characterised in that , 11 said bracket provides a support point (S) for supporting the load (L) of said sash , said support point (S) being laterally offset from the longitudinal extent of said push-pull chain so that the load (L) of said sash urges said push-pull chain to bend in said second opposite direction (D2), a connection pin connecting said bracket to at least one of said sash and said suspension arm , and said connection pin extending though an oblong first opening in said bracket for securing said push-pull chain to one of said sash and said suspension arm whilst allowing said connection pin to move in said oblong first opening in the direction of the longitudinal extent of said oblong first opening , the longitudinal extent of said oblong first opening being aligned with the longitudinal extent of said push-pull chain . at least one actuator adapted for pivoting said sash in relation to said frame against a load (L) of said sash , said load (L) mainly being caused by the weight of said sash , said actuator comprising a push-pull chain and a bracket , said bracket being rigidly connected to a first end of said push-pull chain , a second end of said push-pull chain being received in an actuator housing connected to said frame , said push-pull chain being adapted for bending freely in a first direction (D1), past a configuration in which said push-pull chain forms a straight line , and only to a limited extent past said straight line configuration in a second opposite direction (D2), characterised in that , 11 said bracket provides a support point (S) for supporting the load (L) of said sash , said support point (S) being laterally offset from the longitudinal extent of said push-pull chain so that the load (L) of said sash urges said push-pull chain to bend in said second opposite direction (D2), a connection pin connecting said bracket to at least one of said sash and said suspension arm , and said connection pin extending though an oblong first opening in said bracket for securing said push-pull chain to one of said sash and said suspension arm whilst allowing said connection pin to move in said oblong first opening in the direction of the longitudinal extent of said oblong first opening , the longitudinal extent of said oblong first opening being aligned with the longitudinal extent of said push-pull chain . <EOS>