Half Circle Blackout Cellular Shades 2 Pack White 36in x 72in

In this review of the Half Circle Blackout Cellular Shades 2 pack, the bottom line is simple: these cordless, semi-circular honeycomb blinds are best for homeowners who need a near-total blackout solution for arched windows without drilling or complex tools. The reviewer found the laminated aluminium foil layer and honeycomb construction delivered strong light blocking and measurable thermal insulation, while the included double-sided tape and clips made installation approachable for most DIYers. This product is particularly useful where privacy and room darkening are priorities, and where a clean, cordless look matters.

Key Features

• Honeycomb construction: The cellular shape traps air to improve heat insulation, helping keep rooms cooler in summer and warmer in winter.
• Laminated aluminium film: A reflective layer provides near-complete blackout and privacy for bedrooms and media rooms.
• Cordless, no-drill install: Sturdy double-sided tape and supplied accessories allow mounting without tools or permanent hardware.
• Trim-to-fit radius: The 36in radius shade can be trimmed to match irregular or smaller arched windows between about 6in and 36in radius.
• Accessory kit included: Clips and stabilizers are provided to prevent tilting or falling and to permit alternative mounting on regular windows.

Who It's For

These shades suit renters and homeowners who need a blackout solution for half-moon or arched windows and prefer a cordless, low-impact installation. They are a good match for bedrooms, nurseries, home theaters and any space where reducing light and improving insulation is important.

People who need an exact factory fit for unusually shaped or very large arches, or those who prefer motorized or decorative hardware, should consider other options; trimming and careful measuring are necessary for a neat finish and some users reported variability when cutting to size.

Pros & Cons

Pros

• Effective light blocking thanks to the laminated aluminium foil layer and dense fabric.
• Easy installation without drilling using reliable double-sided tape and included clips.
• Good thermal and sound insulation from the honeycomb structure, improving comfort year-round.
• Clean cordless appearance that preserves the arch aesthetic.

Cons

• Cutting to fit irregular arches can be tricky for some users and may require patience to get a perfect edge.
• Not a fit for windows outside the stated radius range without significant modification.

Specifications

Product Type	Half round blackout cellular shade
Pack Count	2 pack
Color	White
Radius	36in (trim-to-fit for 6in to 36in)
Material	Non-woven honeycomb fabric with laminated aluminium foil
Installation	Cordless, double-sided tape and clips (no drill)

Our Verdict

These half-circle blackout cellular shades offer a cost-effective, practical solution for arched windows where blackout, insulation and a cordless look are priorities. They deliver solid light blocking and thermal benefits, and the tool-free installation makes them ideal for renters and DIYers, although careful trimming is required for the best fit. Overall, good value for those who need straightforward room darkening without permanent hardware.

Frequently Asked Questions

Can these be trimmed to fit a smaller arch?
Yes. The shades can be trimmed to fit arches with radii down to about 6in, but trimming carefully is important to maintain a neat appearance.

Is drilling required for installation?
No. The product includes strong double-sided tape and clips so it can be installed without drilling or special tools.

Do these shades really block out light?
Yes. The laminated aluminium foil layer combined with the dense honeycomb fabric provides near-complete blackout and good privacy.