ONSTRUCTION Made of 100% polyester. Crafted from 100% polyester, the blackout liner prevents most light from entering windows to help darken the room. Shade is not reversible. Concealed handle makes it easy to lower and raise shade in one easy movement. Can be used as an inside or outside mount with included installation hardware. Available in 3 lengths; 48", 66" and 84". Imported. CARE Use a duster or vacuum with soft brush to remove dust and debris. Spot clean with a damp, white cloth. Blot to remove excess water. Air dry. Do not machine wash or dry-clean. ASSEMBLY Installation hardware included. INTERNAL MOUNT Measure inside width of window casing at top of window (this measurement is critical because headrail must fit. Measure inside height from top of window casing to top of sill in 3 places, record longest measurement. Choose width at least 3/8" smaller than the window (round down to the nearest inch). EXTERNAL MOUNT Measure width to be covered. Measure height to be covered from top to desired length, record measurement. 2" overlap on each side of window is recommended for optimum light control and privacy.