For example some people may think that when they are going to buy a valance with a 3 inch wide opening they need a 3 inch wide rod which isnt the case at all. Rod type Rod take up Pocket size Typical heading Sashcurtain Rod ½ 1 ½ 1 ½ 1 38 wood pole 1 3 3 2 Wood Pole 1 ½ 4 3 3 Wood Pole 2 6 ½ 3 2 ½ Flat Rod ½ 3 ½ 2. Drapes Measuring Guide Cushion Source Rod Pocket Drapes Rod Pocket Drapes To accomplish that you would need to make sure the curtain rod is at least 20 inches larger than the original window size of 48 inches or 68 inches. Curtain rod size chart . Rod Size 12 curtain rod Pocket 1 Take-up 716-12 Rod Size 2 ½ wide flat continental rod Pocket 3 3 ½ Take-up 38 Rod Size 4 ½ wide flat continental rod Pocket 5 5 ½. The majority of prepacked stock swag pairs are usually 58W to 60W are 38L. First you need to know that your drapery rod should generally be 10 15 inches longer on each side of the window to allow for the fabric to hang on each side. 3 ½ divided by 2 1 ¾ this...