Construction Made from a blend of plastic and metal, these Venetian blind regulators offer long-lasting performance and wear resistance, making them a reliable choice for your window treatment needs. Light control customization This set includes two four-sided frequency regulators, allowing you to easily adjust light levels and privacy in your space according to your specific preferences. Sizing compatibility Please refer to the detailed size chart before purchasing to these regulators fit your existing blinds perfectly, avoiding any sizing issues. Easy setup Designed for straightforward installation, these regulators require minimal tools, enabling you to enhance your window coverings without needing professional assistance. Use scenarios - In a living room with strong afternoon sun, adjust the regulators to reduce glare while preserving natural light and privacy. - In a home office, use the regulators to improve screen visibility and control privacy without sacrificing daylight. - In a bedroom, customize light levels for morning wake-up or evening privacy without heavy adjustments.