The title fluorinated bisbenzoxazine, C 18 H 18 F 2 N 2 O 2 , crystallizes with one half-molecule in the asymmetric unit, which is completed by inversion symmetry. The fused oxazine ring adopts an approximately half-chair conformation. The two benzoxazine rings are oriented anti to one another around the central C—C bond. The dominant intermolecular interaction in the crystal structure is a C—H...F hydrogen bond between the F atoms and the axial H atoms of the OCH 2 N methylene group in the oxazine rings of neighbouring molecules. C—H...π contacts further stabilize the crystal packing.