Envelope, Kakuni Size, High Quality, 250g Coated Cardboard, Mail Delivery ※Kakuni (also known as Kakugata 2-go) size is a non-standard size, also known as "Square No. 2," and can fit A4 size documents without folding. Along with Nagasan envelopes, it is one of the most commonly used shapes for company envelopes. A4 A4 clear files fit. The flap is folded and packaged simply in a waterproof OPP bag or宅配ビニール袋 (delivery vinyl bag). Slightly smaller outer dimensions than the maximum size for Yu-Packet, Yu-Packet Post, Click Post, and Nekopos delivery services. Kakuni size. Even when putting A4 copy paper into a slightly larger clear file, it can be inserted smoothly. Double-sided tape is attached to the flap. Dimensions (outer): Length 332 x Width 240 + Flap 55mm, Gusset 2.5mm Material: Coated cardboard Color: White Sealing tape included Opening zipper included Format: Horizontal envelope Material: 250g/㎡ (thick paper (coated cardboard)) Weight: Approximately 45 g per sheet #Yu-Packet Compatible #Yu-Packet Post Compatible #Click Post Compatible #Thick Paper Envelope #Business Letter Case #宅配便資材 (Delivery Materials) #A4 Size Thick Paper Envelope #A4 Size #Thick Paper Envelope