角かく封ふう筒とうalso: かくぶうとうかくふうとうじ字FuriganaMeanings1nounwestern-style envelopeRefers to an envelope with a rectangular flap, as opposed to traditional Japanese envelopes with a triangular flap. Common in office and everyday use.履り歴れき書しょは角かく封ふう筒とうに入いれて送おくってください。
