Discover this 1-piece blackout roller blind, made of robust polyester with a silver coating, offering total darkness and effective thermal insulation for your bedroom or living room windows. Ideal for protecting your privacy while regulating indoor temperature both summer and winter. 1. Maximum Opacity: The dense fabric combined with the silver backing completely blocks outdoor light and UV rays, ensuring a peaceful night or a glare-free workspace. 2. Versatile Installation: Enjoy total flexibility thanks to two mounting options; install it without drilling with clamps suitable for frames from 17 to 25 mm, or permanently attach it to the wall or ceiling with screws. 3. Energy Efficiency: The reflective layer acts as a thermal shield, reflecting heat in summer to keep the room cool and retaining ambient heat in winter to reduce heat loss. 4. Simplified Maintenance: Designed to last, this roller blind requires minimal maintenance; A simple wipe with a damp cloth is all it takes to remove dust and maintain the brightness of the white color. Material: Polyester with silver coating. Dimensions: 55 cm wide x 130 cm high. Color: White. Quantity: 1 piece. Compatible frame thickness: 17 mm to 25 mm. Package contents: 1 roller blind, drill-free mounting kit (clamps), mounting kit with drilling (screws and brackets). Mounting type: Drill-free (on frame) or with drilling (wall/ceiling). Care: Wipe clean with a damp cloth. Total Blackout: This roller blind is made of durable, completely opaque polyester with a special silver coating on the back. This technical design effectively reflects sunlight and ensures complete darkness in the room, creating an environment conducive to rest or concentration without light intrusion. Flexible Installation: We offer two mounting methods.