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BLINDSPEC

Glossary · Blackout

Room-Darkening Fabric

Room-darkening fabric significantly reduces incoming light without blocking it completely — dimmer, cozier, good for living rooms, media spaces, and nurseries where total blackout isn’t the goal. It sits between light-filtering and true blackout on the opacity scale, and the terms are used loosely across sellers, so read the actual description rather than the label. The honest framing: if you want a comfortably dim room and can live with a soft glow, room-darkening is the right, often cheaper pick; if you need a fully dark bedroom for shift-sleep or a projector, room-darkening will disappoint and you should plan for blackout fabric plus a light-sealing mount. Match the claim to the room’s real need.

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