# Changshade Blackout Cellular Shade, 21 × 36 in

Changshade blackout cellular shade is a white, cordless window covering listed at 21 inches wide by 36 inches high. It is designed for inside mounting without drilling, but fit depends on the window opening and frame depth.

- [Original product page](https://best-deals.pro/product/changshade-blackout-cellular-shade-21x36)
- [View offer](https://best-deals.pro/visit/changshade-blackout-cellular-shade-21x36)
- Market: US
- Language: en-US
- Currency: USD
- Brand: Changshade
- Model: blinds
- Category: Home & Kitchen > Home Textiles > Curtains
- Price: 27.87 USD
- Previous price: 36.68 USD
- Discount: 24%
- Price checked: 2026-11-14T09:37:00.169Z
- Rating: 4.5 / 5
- Reviews: 203

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Listing describes a tension-mounted, no-drill installation for inside window frames.
- The cordless shade is raised and lowered by hand and can be stopped at a chosen height.
- Honeycomb construction is claimed to help reduce heat transfer and soften outside noise.

## Pros

- Cordless manual control avoids dangling operating cords.
- The listed 21 × 36 in size and inside-mount design suit buyers seeking a compact shade for a properly sized window.
- Customer feedback reports room darkening, appearance, fit, and no-drill installation as positive points.

## Specifications

### Identity
- Brand: Changshade
- Model: blinds
### Dimensions and installation
- Listed size: 21"w x 36"h
- Mounting type: Inside Mount
- Form factor: Rectangular
- Installation feature: Tool Free Installation, Window Treatments
### Materials and protection
- Material: Polyester
- Water resistance listed: Moisture Resistant
- Color: White
- Opacity: Blackout
### Operation and care
- Operation mode: Manual
- Control type: cordless
- Care instructions: Spot Clean Only
- Recommended use: Indoor

## Before you buy

- Measure the window carefully. The listing recommends at least 1.25 inches of frame depth and a shade width about 1/4 inch less than the opening. Blackout, insulation, and noise reduction are listing claims, not quantified performance ratings.

## In the box

- Mounting hardware (Included)
- User manual (Included)

## A good fit for

- Renters or homeowners seeking a cordless inside-mount shade without drilling.
- Buyers looking for a room-darkening shade for a bedroom, office, or other indoor space, provided the window fits the specified size.

## Less suited to

- Windows that do not suit a 21-inch-wide by 36-inch-high shade or lack the recommended inside-mount depth.
- Buyers who need an outside-mount installation or a quantified light-blocking or insulation rating.

## Customer feedback

Customer feedback highlights perceived room darkening, fit, appearance, and the no-drill installation. Stability and durability feedback is mixed, so buyers who expect frequent handling may want to weigh those concerns. The reported light-blocking experience is relevant to the shade's intended use, but does not establish a measured blackout level.
- Positive themes: Customers report effective room darkening and appreciate the appearance and fit.
- Positive themes: Customers value the no-drilling installation process.
- Mixed feedback: Feedback on stability and durability is mixed, with some finding it durable and others not.

## Frequently asked questions

### What size is this shade?
The listed size is 21 inches wide by 36 inches high. Measure the opening and follow the listing's recommendation to choose a shade about 1/4 inch narrower than the window.
### Does it require drilling?
The listing describes tool-free, no-drill tension mounting for an inside mount. It recommends a minimum window depth of 1.25 inches.
### Is the shade cordless?
Yes. It is listed as cordless and manually operated, with hand lifting and lowering.
### What comes in the package?
The manufacturer’s included-components list names mounting hardware and a user manual.

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## Images

![Changshade Blackout Cellular Shade, 21 × 36 in — 1](https://best-deals.pro/i/qBR8AMbahkYOgyTHoI5XrTsKf9w5ntJf8sBeUg1ipbtCoP_AGM7joOmlf1L8QraLJnOOgJ3HqlBZWBpXBConlSP0RBXB_mfwsPwtPzrG0bti1_yg-52sM98C.jpg)

![Changshade Blackout Cellular Shade, 21 × 36 in — 2](https://best-deals.pro/i/Wx6Ek59mgM1E_4-IAa8lcZLqJc_5Jbh5mYRV38u1puB7MAFDLOIKO4R9x66A6ccTScvsuXtUBTzSoFeZ6GbFKu786i0fD5TetnQalmhr7uCXPFvD0pQyMm76.jpg)

![Changshade Blackout Cellular Shade, 21 × 36 in — 3](https://best-deals.pro/i/0KVf0L5ZU2wyO9hoHFc-W6GiU_HWXDEW9w3Jqlcvy41dNa6BS-D9Mc6dmFLPI59v5m2t90L2N2ncmapSMGMT_rFLXTcz5BjIZNw3esaIhDwEADMnWqxbzNTG.jpg)

![Changshade Blackout Cellular Shade, 21 × 36 in — 4](https://best-deals.pro/i/iOfJwCatfreMGqi_Wi6Mt9ij32pfnQsFlTBCFJT2nLEGVAqeJEdBiSntZlbUF3lZxqY9EYaWqvB_jdZVW7OlQlNnGKa9v--tqBZ3A2BZySrMlu-HkE7oaVxe.jpg)

![Changshade Blackout Cellular Shade, 21 × 36 in — 5](https://best-deals.pro/i/ammWaOTzxY-JKIaeUZB6j9B1z8aWKrCil4xL8Q9FH5salVchsA2qbtHB9PIHJLCdO7ROCmO7myifCpbE6gZr0DYms4P0LTUn-HA8p4q6uXMCPl3EMWCuzqBL.jpg)

![Changshade Blackout Cellular Shade, 21 × 36 in — 6](https://best-deals.pro/i/pUI6BW87b-Fk3Kpf67e0iGxTHFL_9XZXL0dgaeZbWTv1D7db5BsXFDP5YBNHMk_Khhgq0J0XMN4C4sE3BFsZUjOCXwpHXmI08WoKQ0ANh0C642qRGt0lKdzY.jpg)

![Changshade Blackout Cellular Shade, 21 × 36 in — 7](https://best-deals.pro/i/AQXrakhzz5VBKLHfXKL2H90NkEh6Cm348kE_POj-TIdxC5sBIqXMDlqycSYpITHCSUpG-5JUGIyZleRMLVfuLB2HhtfsiBfA3wYh3zwThztJZcMXf_vGeDvM.jpg)