Eclipse 1/2" Room Darkening Spring Tension Curtain Rod, 28-48", Oil Rubbed Bronze The Eclipse 1/2" Room Darkening Spring Tension Curtain Rod is designed to block window sidelight, reduce outside noise and drafts, and enhance privacy in your home Installs easily inside your window frame with no tools required Spring tension rod adjusts from 28-48" to fit your window The 1/2" diameter rod is suitable for use with sheers, tiers, or valances in your kitchen or bathroom Pair with Eclipse Light Filtering curtain panels (sold separately) to maximize privacy, light blocking and noise reduction features