100% Blackout Roller Shades White 35in x 75in - Cordless Thermal

Our review of the 100% Blackout Roller Shades (white, 35in x 75in) finds them best for bedrooms, home offices and French doors where complete darkness, privacy and simple operation matter most. The single biggest reason to buy is the true blackout fabric: the four-layer polyester construction paired with snug install options blocks light and reduces heat better than thin rollers, and the cordless system makes daily use safer and smoother. Installation is straightforward and the built-in tension adjustment helps smooth out roll-up behavior over time.

Key Features

• Size selection guide: Clear inside- and outside-mount instructions help you pick the right 35in size or a wider outside-mount for full coverage.
• Cordless safety: The cordless design removes dangling cords, making these shades safer for homes with kids and pets and easier to operate.
• 100% blackout fabric: Four-layer polyester construction provides complete light blocking, improved thermal insulation and added privacy for sleeping spaces.
• Tension adjustment system: An adjustable screw on the right end of the top bar lets you fine-tune roll tension for smoother raising and lowering.
• Durable build: Aluminum alloy tracks and a weighted bottom rod pair with a fabric that passed over 6000 lift cycles for lasting function.
• Included installation kit: Metal brackets, screws and pull rings plus a video guide make the typical 10-15 minute install achievable for most DIYers.

Who It's For

This shade is ideal for anyone who needs complete darkening for sleep or media rooms, especially owners of standard 35in windows or French doors measuring up to 75in tall. Renters who can use the outside-mount option will appreciate the non-permanent look and quick install, and families will value the cordless safety and child-friendly design.

Those who want motorized or remote control operation, decorative patterned fabric, or exact fabric-to-edge zero-gap light seals for specialty windows should look elsewhere; this product focuses on straightforward blackout performance, easy installation and durability rather than smart-home features or ornamental styles.

Pros & Cons

Pros

• Effective 100% blackout performance and UV protection for improved room darkening and temperature control.
• Cordless design is safer for children and pets and simple to operate between 0-75in positions.
• Included hardware and clear installation video allow most users to finish setup in about 10-15 minutes.
• Sturdy construction with aluminum components and fabric durability tested for long-term use.

Cons

• Fabric width is 0.8in narrower than the stated shade size, so expect a small light gap unless you choose a wider outside-mount.
• Not motorized; users seeking remote control operation will need a different model or adapter.

Specifications

Brand	GENIMO
Color	White
Size	35in W x 75in H
Fabric	Four-layer polyester blackout
Operation	Cordless with tension adjustment
Mount options	Inside or outside mount (outside +4in recommended)
Included	Brackets, screws, pull rings and instruction guide

Our Verdict

These 100% blackout roller shades deliver reliable darkening, simple cordless operation and robust materials at a practical price, making them a smart choice for bedrooms, home offices and French doors. They are particularly good value when you need privacy and thermal benefits without fancy controls; just plan mount type carefully to avoid a narrow fabric gap.

Frequently Asked Questions

Will these shades fit a 35in window?
Yes; for inside mount your frame should be at least 3in deep and you can choose a 35in shade or slightly smaller, while for outside mount add about 4in for full coverage.

Do they completely block light?
The four-layer polyester fabric provides 100% blackout performance, though the fabric is about 0.8in narrower than the shade size, so outside-mounting is recommended for edge-to-edge coverage.

How hard is installation?
Installation is straightforward with the provided metal brackets, screws and a video guide; most installs take about 10-15 minutes and include a tension adjustment screw for smoother operation.