Cordless Cellular Shades 40in x 48in Blackout Honeycomb - White

In this review the LazBlinds Cordless Cellular Shades are assessed as a practical blackout option for bedrooms and living spaces where light control and insulation matter most. The single biggest reason to buy is the combination of a true light-blocking silver-plated cell layer and a cordless, child-safe design that simplifies daily use. Installation is straightforward for both inside and outside mounts when measuring guidance is followed, and the shade height adjusts down to 0in and up to 48in to fit typical window openings.

Key Features

• True blackout lining: The silver-plated layer inside each cell blocks sunlight and UV rays to create a dark sleeping or media room environment.
• Cordless operation: The cord-free design keeps windows tidy and improves safety for homes with children or pets while allowing easy raising and lowering.
• Thermal insulation: The 3/5in cell structure traps air to reduce heat transfer, helping keep rooms cooler in summer and warmer in winter.
• Noise reduction: The honeycomb cells provide an added buffer against outside noise for a quieter work or sleep space.
• Flexible mounting options: Guidance is provided for inside mount (choose same or slightly smaller width) or outside mount (add 3-5in to window width) for reliable coverage.
• Height adjustability: The shade height can be set anywhere from 0in up to 48in to match window opening and privacy needs.

Who It's For

The shades are best for homeowners or renters looking for a blackout solution that also improves insulation and safety. They suit bedrooms, nurseries, home offices and media rooms where controlling light and reducing noise are priorities.

Those needing unusually tall shades, custom fabric textures, or motorized smart-home integration should look elsewhere; these shades focus on cordless simplicity, thermal performance and basic customization for common window sizes up to 48in high.

Pros & Cons

Pros

• Effective light blockage thanks to the silver-plated blackout layer for true darkness.
• Clean, cord-free appearance that is safer for children and pets and easy to operate.
• Noticeable thermal and acoustic benefits from the non-sagging 3/5in honeycomb cell construction.
• Clear sizing guidance and simple installation for inside or outside mount applications.

Cons

• Some users report the shade may not always stay down perfectly; tension and fit can vary by window framing.
• Requires at least 1 2/5in frame depth for inside mount, which may rule out very shallow frames.

Specifications

Our Verdict

The LazBlinds Cordless Cellular Shades are a sensible value-driven choice for anyone who needs reliable blackout performance, better thermal insulation and a safer cord-free design. They are especially good for bedrooms and nurseries where darkness and child safety matter, and the clear measuring rules make installation predictable for most standard windows.

Frequently Asked Questions

How should I measure for an inside mount?
Choose the size the same as or closest to your window width; the window frame should have at least 1 2/5in depth for inside mount.

What if I want outside mount coverage?
Order a shade width that is your window width plus 3-5in to ensure better light coverage and privacy.

Do these shades fully block daylight?
Yes, the silver-plated layer inside the cells is designed to keep out sunlight and UV rays to create a dark room.