The "header" is the top part of the curtain that attaches to the rod. It dictates how the fabric drapes.

Traditional style with small sewn folds at the top.

Curtains should just barely brush the floor or hover a half-inch above it. Avoid curtains that hang too short. Are you planning to buy ready-made curtains or

The combined width of your curtain panels should be 2 to 2.5 times the width of the window so they look lush when closed.

Modern look featuring metal-ringed holes punched through the fabric.

Helps maintain indoor temperatures by blocking drafts or heat.