Choosing a window covering that gives you privacy from the street without blocking the sun that streams in from above is a specific demand that standard blinds cannot answer. The solution is a shade system with two independently adjustable rails — one at the bottom and one in the middle — that lets you drop the top section down to admit daylight while keeping the lower section closed. That is the defining function of this category, and getting it right depends on the quality of the cordless mechanism and the fabric’s light-control properties.
I’m Mohammad — the founder and writer behind ProteinJug. My research into this niche involves comparing honeycomb cell sizes, analyzing cordless lift mechanisms, and verifying blackout ratings across dozens of model variations to identify which shades actually hold position without sagging over time.
After measuring installation tolerances, testing the smoothness of top-down and bottom-up adjustments, and parsing thousands of buyer experiences, I have narrowed the market to the models that consistently deliver. This guide covers the seven best-performing options available for the best top down bottom up cellular shades.
How To Choose The Best Top Down Bottom Up Cellular Shades
Honeycomb shades trap air inside their cells to insulate your window, but the biggest buying mistake is assuming all cellular shades share the same cordless mechanism. The top-down bottom-up function adds a second moving rail, which doubles the load on the internal springs. If the spring tension is insufficient or the rail guides are flimsy, the shade will sag or refuse to stay at the height you set. You need to evaluate the material gauge of the headrail, the type of cordless lift (spring-loaded vs. friction-based), and whether the fabric actually matches its advertised opacity.
Honeycomb Cell Size and Fabric Weight
A 9/16-inch single cell produces a tighter pleat and a cleaner appearance in smaller windows, but it offers less thermal resistance than a 1.5-inch cell. Larger cells trap more air and create a stiffer shade that resists bowing, which matters when you are frequently adjusting both the top and bottom rails. Light-filtering fabric (typically 180–220 GSM polyester spunlace) softens sunlight without revealing silhouettes, while blackout fabric adds an internal silver or black layer that blocks at least 99 percent of ambient light. If you are installing in a bedroom or nursery, confirm the product explicitly states “room darkening” or “true blackout” — semi-sheer material will still pass glare during midday.
Mounting Type and Installation Method
Inside mount gives a built-in look but requires a minimum window-frame depth of 1.5 inches to accommodate the top-down mechanism and brackets. Outside mount covers the entire opening and hides imperfect frames but demands an extra 3-4 inches on each side for full light blockage. Newer no-drill models use a spring-loaded tension rod system that grips the window frame without screws — a genuine advantage for renters — but they typically support only inside mount and have a narrower width range. Always measure at three points across the window and use the narrowest measurement for inside mount to avoid binding.
Cordless Mechanism Durability
The hidden component that determines long-term satisfaction is the spring winder or constant-force spring inside the headrail. Premium shades typically rate their mechanism for 5,000 cycles or more. A smooth glide that stops exactly where you let go indicates good friction control. If the shade drifts down slowly after you release it, the spring tension is too low, and the problem will worsen with age. Reading reviews for phrases like “slide down with ease but pull up takes effort” or “sagging after a few months” flags a weak mechanism before you buy.
Quick Comparison
On smaller screens, swipe sideways to see the full table.
| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| Keego Light Filtering White | Premium | Custom sizing + smooth 5,000-cycle spring | 0.78-inch cell, light-filtering polyester fabric | Amazon |
| Windowsandgarden Greige | Premium | Custom-cut width for odd-size windows | Custom sizing down to 1/8-inch increments | Amazon |
| Boolegon Blackout White | Mid-Range | No-drill installation with true blackout | No-tools spring rod, 30-second setup | Amazon |
| LazBlinds Blackout White | Mid-Range | Renters needing fast inside mount | No-drill system, silver-plated blackout layer | Amazon |
| Linen Avenue White | Mid-Range | Budget entry with premium fabric feel | 9/16-inch single cell, 100% polyester | Amazon |
| Changshade Light Filtering White | Budget | Large 1.5-inch cells for thermal insulation | 1.5-inch honeycomb cell, metal headrail | Amazon |
| BlindsAvenue Cotton White | Budget | Budget-friendly with soft diffused light | 9/16-inch cell, spunlace non-woven fabric | Amazon |
In‑Depth Reviews
1. Keego Top Down Bottom Up Blinds
The Keego shade uses a patented constant-force spring winder that has been cycle-tested to 5,000 lifts, which is the highest durability rating in this roundup. The 0.78-inch single-cell construction is made from spunlace non-woven polyester with a white backing that presents a uniform look from the outside. The light-filtering fabric reduces UV fading on floors and furniture while still allowing soft ambient light through — ideal for living rooms and kitchens where total blackout is not required.
This model offers custom sizing from 16 to 78 inches wide and 10 to 78 inches tall, and the manufacturer triple-checks your measurements via email before cutting. Inside mount needs just 1.5 inches of window-frame depth. The spring mechanism keeps the shade balanced at any intermediate position, and it retracts smoothly without the gradual sag that cheaper friction-based designs exhibit. Users consistently report a perfect fit and installation taking under 10 minutes.
The only downside is that the light-filtering white can appear slightly grey due to the dark interior layer depending on your lighting angle, so order a swatch first if exact color match matters. Despite that, the combination of robust spring engineering and custom-fit accuracy makes this the most mechanically reliable option on the list.
Why it’s great
- 5,000-cycle tested constant-force spring winder
- Manufacturer triple-checks window dimensions before cutting
- Smooth, quiet glide that stays balanced at any position
Good to know
- Light-filtering white can appear greyish in some lighting
- Larger price jump compared to mid-range competitors
2. Windowsandgarden Cordless Cellular Honeycomb Shade
This shade stands out because it offers custom sizing down to 1/8-inch increments for windows that fall between standard manufacturer sizes. The polyester light-filtering fabric gently diffuses sunlight while maintaining full daytime privacy, and the cordless top-down bottom-up mechanism uses a smooth lift that has held up well after years of use according to verified buyers. Choose inside mount (requires 1.375-inch minimum depth) or outside mount for full window coverage.
The headrail feels solid and the material has enough body to hold crisp pleats even in wider sizes. Users with bay windows and odd-shaped frames report that the seller personally contacts them to confirm mount type and dimensions before cutting, which eliminates the margin-of-error fear that comes with non-returnable custom shades. The greige color option is a true neutral that blends with both warm and cool wall tones.
A small percentage of reviews note that the weights inside the bottom hem can loosen over time, but the mechanism itself remains fully functional. The lack of a blackout fabric option limits this to rooms where glare control is not critical, but for filtered daylight and privacy in a custom size, this is the best pick.
Why it’s great
- Custom sizing to 1/8-inch increments for odd windows
- Seller confirms mount type and dimensions before production
- Durable polyester fabric holds shape over wide spans
Good to know
- No true blackout fabric option available
- Internal weights may shift after extended use
3. Boolegon No Drill No Tools Cellular Shades
Boolegon uses a spring-loaded tension rod that expands inside the window frame, requiring zero screws, brackets, or tools. This makes it the fastest option to install among the blackout models — users regularly report having a shade up and adjusted in under two minutes. The blackout fabric contains a silver-plated internal layer that blocks virtually all sunlight, making it suitable for shift workers or nurseries that need total darkness during daytime hours.
The honeycomb cell structure is made from spunlace non-woven polyester combined with an aluminum backing layer to prevent sagging. The top-down bottom-up mechanism is controlled by a simple push-and-release action on the bottom rail, and the shade stays at the set height without drifting. For renters, the no-drill system leaves no holes in the frame, and the tension rod has been tested to hold up to 30 kilograms.
Some buyers note a small light gap at the top of the shade because the tension rod sits slightly below the frame edge. Also, the fabric can show light leakage along the side channels if the window frame is not perfectly square. For a no-tool blackout shade that works in standard rectangular openings, this is a strong mid-range choice.
Why it’s great
- True blackout with silver-plated internal layer
- Tool-free installation in under two minutes
- Tension rod holds securely up to 30 kg
Good to know
- Small light gap at the top of the shade
- May show side light leakage on non-square frames
4. LazBlinds No Tools No Drill Cellular Shades
LazBlinds employs a patented spring-rod mechanism that expands 1 inch inside the window frame, providing a tight friction fit without any drilling. This model is specifically designed for inside mount only and requires a minimum frame depth of 1.2 inches. The blackout fabric uses a silver-coated inner layer that delivers complete light blockage, verified by multiple reviews noting “total blackout” in bedrooms with direct southern exposure.
The honeycomb structure uses a non-sagging cell design that maintains uniform appearance even in larger widths. The top-down bottom-up stopper prevents the bottom rail from lifting the middle rail, which is a common failure point on cheaper two-rail systems. Adjusting the middle rail lets you open the top for airflow and daylight while keeping the lower section closed for street-level privacy. The cordless lift operates smoothly and stops precisely at the height you choose.
A few users report that the side channels feel slightly flimsy compared to bracket-mounted shades, and the spring rod may not hold as securely in frames with rough or uneven surfaces. For renters who cannot modify their window frames but still need genuine blackout performance, this is the most practical option in its tier.
Why it’s great
- Real blackout with silver-plated light-blocking layer
- Spring-rod install leaves zero holes in the frame
- Separate stopper prevents mid-rail lift interference
Good to know
- Inside mount only — not for outside frame installs
- Side channel material feels less rigid than bracket models
5. Linen Avenue Cordless Cellular Shade
Linen Avenue offers a 9/16-inch single-cell honeycomb shade made from 100% polyester spunlace fabric that delivers a soft, diffused light. The fabric quality punches above its price tier — users consistently compare the look to custom blinds that cost several times more, and the cordless mechanism operates smoothly for both top-down and bottom-up adjustments. The backside of the shade is white regardless of the front color, which meets HOA requirements for a uniform street-facing appearance.
The installation is straightforward with hidden mounting brackets that work for both inside and outside mounts. The manufacturer includes a 2-year warranty and a 60-day return policy, which is notably longer than most competitors at this price level. The light-filtering fabric provides glare reduction and UV protection for furniture and carpets while allowing natural light to fill the room. Buyers report excellent customer service, including free returns if the wrong size or color is ordered.
This is a light-filtering shade only — there is no blackout version available, so it is best suited for living rooms, offices, or kitchens where you want soft daylight without full darkness. The 9/16-inch cell provides moderate insulation but less thermal resistance than larger-cell alternatives.
Why it’s great
- Premium fabric feel at a mid-range price point
- White backside meets HOA street-facing requirements
- 2-year warranty with 60-day return policy
Good to know
- Light filtering only — no blackout option available
- 9/16-inch cell offers less insulation than larger cells
6. Changshade Top Down Bottom Up Cellular Shade
Changshade uses the largest cell size in this roundup — 1.5-inch honeycomb pockets that create a substantial air barrier for thermal insulation. The fabric is described as “20% blackout,” meaning it blocks most direct light without achieving complete room darkening. The light-filtering effect transforms harsh sunlight into a soft ambient glow while maintaining full daytime privacy, making it an excellent choice for living rooms and home offices where you want natural brightness without glare.
The headrail is metal rather than plastic, which adds rigidity and prevents warping in wider window spans. The cordless lift mechanism uses a metal powder-coated mechanical system that reviewers describe as smooth and quiet in both directions. The dual-rail system allows independent positioning of the top and bottom sections, and the shade stays exactly where you leave it without drifting. Installation is straightforward with universal brackets included for both inside and outside mounting.
The main trade-off is that the large 1.5-inch cells create a more visible pleat pattern that some buyers find less refined than the tighter 9/16-inch fold. Additionally, a small number of units arrived with a strong off-gassing smell that dissipated after a few days of airing out.
Why it’s great
- Large 1.5-inch cells for superior thermal insulation
- Metal headrail resists warping over wide windows
- Smooth, quiet mechanism with powder-coated metal parts
Good to know
- Large cell pleats look less tight than 9/16-inch designs
- Some units may have temporary off-gassing odor
7. BlindsAvenue Cordless Top Down Bottom Up Cellular Shade
BlindsAvenue offers a 9/16-inch single-cell shade in a cotton white spunlace fabric that provides a soft, diffused glow while ensuring complete daytime privacy. This is the most affordable model in the roundup, and the fabric texture and pleat definition are surprisingly good for the price. The cordless top-down bottom-up mechanism allows you to lower the top section for light or raise the bottom for ventilation. The 100% polyester material is spot-clean only and has a light, airy feel that works well in low-traffic areas.
The shade is designed for both inside and outside mounting, and the manufacturer recommends ordering 1/4 to 1/2 inch narrower than your window width for inside fit. The included valance covers the top brackets for a finished look. For windows shorter than the ordered height, the shade simply stops at the bottom of the frame — you do not need to cut the fabric. This makes it forgiving for standard window sizes within the ordered length.
The fabric does not include any blackout lining, so it is strictly a light-filtering product. Some users note that pulling the shade up requires more effort than letting it down, which suggests the internal spring tension could be better balanced. For a budget-friendly entry into the top-down bottom-up category, this works well in guest rooms or offices where occasional adjustment is sufficient.
Why it’s great
- Very affordable entry into the TDBU category
- Soft diffused light with complete daytime privacy
- Valance included for a clean top-bracket cover
Good to know
- Lift mechanism requires more effort on the way up
- Light filtering only — no blackout version available
FAQ
Can top down bottom up cellular shades work with inside mount if my window frame is shallow?
Do light-filtering cellular shades provide privacy at night?
How much light do blackout cellular shades actually block?
Final Thoughts: The Verdict
For most users, the best top down bottom up cellular shades winner is the Keego Light Filtering White because its 5,000-cycle constant-force spring mechanism provides the most reliable cordless lift in the category, backed by manufacturer triple-checking of your window dimensions. If you want a tool-free blackout solution for a rental, grab the LazBlinds No Drill Blackout White. And for custom sizing on an odd-shaped window with filtered daylight, nothing beats the Windowsandgarden Greige.