Cordless Cellular Shades Top Down Bottom Up - No Tools No Drill (21in

Our review of these cordless cellular shades finds them best for renters and homeowners who want a tidy, insulated window covering without drilling or tools. The single biggest reason to buy is the patented No Tools-No Drill system that installs inside mount in seconds, making setup simple for anyone who needs a temporary or renter-friendly solution while still delivering light filtering and thermal benefits. The review focuses on real use: quick install, child-safe cordless operation, and the notable top-down bottom-up control that balances privacy and natural light.

Key Features

• No Tools-No Drill system: Installs in about 30 seconds with no screws or brackets, ideal for renters and people who want a fast, damage-free fit.
• Inside mount design: A standard 3/8 in deduction is applied so the supplied size fits an inside mount opening with a minimum 1 1/5 in depth requirement.
• Cordless Top-Down Bottom-Up: The cordless mechanism and TDBU stopper let you lower from the top or raise from the bottom to adjust light and privacy freely.
• Light filtering honeycomb fabric: Soft non-woven polyester provides daytime privacy while still allowing gentle ambient light into the room.
• Thermal insulation: Non-sagging cell structure helps reduce heat transfer and outside noise for a more comfortable interior.
• Adjustable fit: The unique spring rod extends about 1 in so the actual blind (20 5/8 in) accommodates window widths roughly 20.7-21.6 in.

Who It's For

This shade is well suited to renters, landlords, and homeowners who need a neat, damage-free inside mount solution that still performs. It is particularly good for bedrooms, living rooms, and dining rooms where light filtering and modest insulation are desired, and where child-safety from cords is a priority.

People who need an outside mount, blackout-level darkness, or custom motorized controls should look elsewhere; this model is specifically designed for inside mount use with a minimum frame depth and is focused on cordless, manual operation rather than full blackout performance.

Pros & Cons

Pros

• Fast, tool-free installation preserves window frames and suits temporary living situations.
• Cordless design creates a cleaner look and improves safety for children and pets.
• Top-down bottom-up control adds versatile privacy and light control without complex hardware.
• Cellular construction helps with insulation and noise reduction.

Cons

• Inside mount only with a minimum 1 1/5 in frame depth, so it will not fit shallow or outside-mounted openings.
• Light filtering fabric does not provide full blackout for users who need complete darkness.

Specifications

Brand	LazBlinds
Product type	Cordless cellular shades (TDBU)
Nominal size	21 in W x 48 in H
Actual blind size	20 5/8 in W x 48 in H
Fit range	Fits window width about 20.7 in to 21.6 in
Mount type	Inside mount only (minimum 1 1/5 in depth)
Fabric	Light filtering non-woven polyester honeycomb

Our Verdict

These cordless cellular shades are a practical, affordable choice for anyone who wants a quick, no-damage installation with genuine light control and insulation benefits. They are especially good for renters and family rooms where safety and clean lines matter; buyers who need outside mount or complete blackout should consider other options. Overall, they deliver solid value for the intended use.

Frequently Asked Questions

Can these shades be installed without drilling?
Yes, the patented No Tools-No Drill system is designed to install the shade inside the frame without screws, brackets, or drilling.

Will they block out all daylight?
No, the fabric is light filtering, so it provides privacy and soft light rather than full blackout.

What window depth is required?
The shade requires a minimum inside mount depth of 1 1/5 in to fit properly.