Cordless Cellular Shades Blackout 21 in x 64 in - Easy No Drill

In this review the focus is on a practical solution for renters, families with children, and anyone wanting true darkness without a complicated install. These cordless blackout cellular shades deliver the single biggest advantage up front: a genuine no-drill, no-tools mounting system that installs in seconds while providing strong light-blocking and room-darkening performance. The review covers fit, build, and real-world use for a 21 in x 64 in inside-mount shade in the Silver White color.

Key Features

• No Tools-No Drill system: Installs without drilling into the window frame, making it ideal for renters and anyone who prefers a fast, nonpermanent fit.
• Real blackout construction: A silver-plated layer inside the honeycomb cells blocks sunlight and UV for darker rooms and better daytime sleep.
• Cordless operation: Smooth spring-rod lift works without exposed cords, improving child and pet safety and reducing tangles.
• Adjustable fit: The unique spring rod extends up to 1 in to fit window widths from about 20.7 in to 21.6 in and the shade height adjusts from 0 in to 64 in.
• Thermal and acoustic benefit: The 3/5 in cell structure resists sagging while helping insulate against heat and cold and reducing outside noise.
• Quick install versatility: Designed for inside-mount on many surface types, it fits wood, tile, concrete and rough finishes without drilling.

Who It's For

These shades are best for renters and homeowners who need a blackout solution that installs without hardware and looks tailored. The cordless design makes them especially suited to households with children or pets where exposed cords are a safety concern, and the thermal cell helps anyone seeking quieter, darker bedrooms or media rooms.

Those needing an outside mount or a different custom width should look elsewhere, because these shades are intended for inside mount only and require a minimum frame depth of about 1.2 in; also expect the factory width deduction when measuring to ensure proper fit.

Pros & Cons

Pros

• Truly no-drill installation that can be completed in under a minute, ideal for nonpermanent setups.
• Effective light blocking from the silver-plated cell lining creates a dark room for daytime sleep.
• Cordless spring-rod lift is simple to operate and safer for children and pets.
• Neat appearance and good value compared with custom shades, with solid build quality reported by users.

Cons

• Inside mount only and requires at least 1.2 in of frame depth, so it will not work on all window types.
• The fit depends on the spring rod range and the standard width deduction, so precise measuring is required for a snug installation.

Specifications

Brand	LazBlinds
Material	Polyester with silver-plated blackout lining
Installed Size	20 3/5 in W x 64 in H (actual blind size)
Window Width Fit	Approximately 20.7 in to 21.6 in (spring rod adjustable)
Mount Type	Inside mount only (minimum 1.2 in frame depth)
Cell Structure	3/5 in honeycomb cells, nondrilling fit
Operation	Cordless spring-rod lift, height adjustable 0 in to 64 in

Our Verdict

For renters, families, and anyone wanting a fast blackout solution without holes in the frame, these cordless cellular shades are a smart, cost-effective choice. They combine genuine light-blocking performance, a safe cordless lift, and a quick no-drill install that looks custom when fitted properly. Just confirm inside-mount depth and measure carefully before ordering to ensure the best fit.

Frequently Asked Questions

Will this shade block daytime light?
Yes. The silver-plated layer inside the cells is designed to provide true blackout performance and reduce UV and daylight penetration.

Can I use this on any window?
It is intended for inside mount only and requires a minimum window frame depth of about 1.2 in; outside mounts are not supported.

Is the lift safe for children?
Yes. The cordless spring-rod lift eliminates exposed cords, making it safer in homes with children and pets.