A fire protection device comprising: a frame including: a body having an inlet and an outlet disposed spaced along a longitudinal axis (A-A) to define a passageway with a nominal K-factor of 241.92 LPM/(bar) 1/2 (16.8 GPM/ 1/2) or greater, the body having a proximal end for coupling the fire protection device to a fluid supply line, the body having a distal end opposite the proximal end; a pair of arms disposed in a first plane generally parallel to the longitudinal axis (A-A), the arms being coupled to the distal end of the body; and a deflector assembly coupled to the arms, the deflector assembly including: a generally planar face portion distally spaced from the outlet of the body and substantially orthogonal to the longitudinal axis (A-A), the face portion further including two openings disposed on opposing sides of a second plane perpendicular to and intersecting the first plane along the longitudinal axis (A-A); and a canopy portion supported on a first side of the first plane and spaced from a first perimeter section of the face portion disposed on the first side of the first plane; characterised in that the fire protection device comprises: a plurality of tines extending along a second perimeter section of the face portion disposed on a second side of the first plane opposite the first side, each of the tines having an outer edge defining an arc length of a common circle having a center aligned along the longitudinal axis (A-A); and wherein each of the two openings comprise a generally triangular flow aperture defined by a rectangular shaped portion disposed to one side of the first plane and a triangular shaped portion disposed to the other side of the first plane, the rectangular portion defining a length of elongation, a side of the triangle extending in the direction of the elongation for a distance that is less than the length of elongation. a body having an inlet and an outlet disposed spaced along a longitudinal axis (A-A) to define a passageway with a nominal K-factor of 241.92 LPM/(bar) 1/2 (16.8 GPM/ 1/2) or greater, the body having a proximal end for coupling the fire protection device to a fluid supply line, the body having a distal end opposite the proximal end; a pair of arms disposed in a first plane generally parallel to the longitudinal axis (A-A), the arms being coupled to the distal end of the body; and a deflector assembly coupled to the arms, the deflector assembly including: a generally planar face portion distally spaced from the outlet of the body and substantially orthogonal to the longitudinal axis (A-A), the face portion further including two openings disposed on opposing sides of a second plane perpendicular to and intersecting the first plane along the longitudinal axis (A-A); and a canopy portion supported on a first side of the first plane and spaced from a first perimeter section of the face portion disposed on the first side of the first plane; characterised in that the fire protection device comprises: a plurality of tines extending along a second perimeter section of the face portion disposed on a second side of the first plane opposite the first side, each of the tines having an outer edge defining an arc length of a common circle having a center aligned along the longitudinal axis (A-A); and wherein each of the two openings comprise a generally triangular flow aperture defined by a rectangular shaped portion disposed to one side of the first plane and a triangular shaped portion disposed to the other side of the first plane, the rectangular portion defining a length of elongation, a side of the triangle extending in the direction of the elongation for a distance that is less than the length of elongation. a generally planar face portion distally spaced from the outlet of the body and substantially orthogonal to the longitudinal axis (A-A), the face portion further including two openings disposed on opposing sides of a second plane perpendicular to and intersecting the first plane along the longitudinal axis (A-A); and a canopy portion supported on a first side of the first plane and spaced from a first perimeter section of the face portion disposed on the first side of the first plane; characterised in that the fire protection device comprises: a plurality of tines extending along a second perimeter section of the face portion disposed on a second side of the first plane opposite the first side, each of the tines having an outer edge defining an arc length of a common circle having a center aligned along the longitudinal axis (A-A); and wherein each of the two openings comprise a generally triangular flow aperture defined by a rectangular shaped portion disposed to one side of the first plane and a triangular shaped portion disposed to the other side of the first plane, the rectangular portion defining a length of elongation, a side of the triangle extending in the direction of the elongation for a distance that is less than the length of elongation. a plurality of tines extending along a second perimeter section of the face portion disposed on a second side of the first plane opposite the first side, each of the tines having an outer edge defining an arc length of a common circle having a center aligned along the longitudinal axis (A-A); and wherein each of the two openings comprise a generally triangular flow aperture defined by a rectangular shaped portion disposed to one side of the first plane and a triangular shaped portion disposed to the other side of the first plane, the rectangular portion defining a length of elongation, a side of the triangle extending in the direction of the elongation for a distance that is less than the length of elongation.