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Nowadays, sofas are generally more than 80 cm wide.
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Look what kind of sofa you're on
It's more accurate to ask your seller directly.
It should be ok. It is recommended that you can lift the mattress into the room with two people lying sideways without any problems. Proceed slowly, being careful not to press your feet! Good luck!
It's not easy to change, the standard size of the cabinet is 600, if you make a cabinet horizontally, people can't stand, and if you make a cabinet vertically, it's too short, you can only do 80
The balcony door is 80 cm too wide, and it is not convenient to open the door, mainly because the door will be very loud when it is windy, and it is not safe, so the balcony door is best about 60 cm.
Now the sofas that ask for money are custom-made and can meet the requirements of various sizes and patterns.