Outswinging casement window vertical outer frame

The utility model discloses an outswinging casement window vertical outer frame which comprises an upper horizontal plate. The outswinging casement window vertical outer frame is characterized in that a left installation clamping plate and a right installation clamping plate are arranged at the lower side of the left end and the lower side of the right end of the upper horizontal plate respectively, a waterproof plate is arranged at the left end of the upper horizontal plate, a step-shaped convex shoulder is arranged on the middle section of the waterproof plate, a sealing groove is formed in the upper end of the waterproof plate, and an elastic strip clamping groove is formed in the side wall of the convex shoulder. The outswinging casement window vertical outer frame is doubly sealed, is good in damping effect and airtightness, and is firmly installed.