Hello
Can I double check - I assume your B5 is the equivalent to A5?

plz reply for the design #22598287. if you have any suggestion plz tell me.

250 x 176 mm
The B5 is the mid-range of B formats in terms of size. Its dimensions are 250 x 176 mm or 9.84 x 6.93 inches. Like all B sizes, B5 can't be printed with a personal equipment, it is most often used in professional printing. B5 format is used to create menus, magazines or advertising flyers.