Buying and Troubleshooting

Blackout Curtain Size Guide

Choose blackout curtain size with enough side coverage, overlap, and length to reduce light gaps.

Blackout curtains need careful sizing because small gaps can let in visible light. Width, rod placement, and mount type all matter.

Blackout Sizing Tips

• Use outside mount for better edge coverage.
• Extend the rod beyond both sides of the window.
• Choose enough fullness so panels do not pull flat.
• Use floor or below-sill length when light control matters.

Coverage Note

No simple fabric panel blocks every possible gap, but wider rods and fuller panels usually improve coverage.

Measure Your Window

Use the curtain size calculator to turn your measurements into curtain width, panel count, rod width, and length recommendations before you order.