Ready made curtain guide

For ready made curtains, the size is generally given in inches, the first number is the width and refers to the size of pole that the curtains will fit and the second number is the drop. This usually refers to the overall drop of the curtains so will relate to the height of your pole

This is the size conversion table

46x54 inches -> 115x135cm's
66x54 inches -> 132x135cm's
66x72 inches -> 132x180cm's 
66x90 inches -> 132x225cm's 
90x72 inches -> 225x180cm's 
90x90 inches -> 225x225cm's
90x108 inches -> 225x270cm's