Ali review
AliExpress magnetic screen door, measure the frame before buying
A practical look at an AliExpress magnetic screen door curtain: custom sizing, door-frame measurement, hook-and-loop tape, magnet closure, and wind limitations.
If you want to leave a balcony, kitchen, or patio door open but do not have a real screen door, a magnetic mesh curtain starts to look tempting. The idea is simple: mesh panels meet at the center with magnets, and the border attaches to the door frame with adhesive tape or hook-and-loop strips.
The product I would check first is this custom-size magnetic screen door curtain. With this category, the product photo matters less than the fit. If your doorway is between standard sizes, a custom-size option may make more sense.

Measure the frame, not just the opening
The biggest question is whether it fits your actual doorway. Do not measure only the clear opening. You also need the outer frame area where the adhesive border will attach. Too narrow can leave side gaps. Too long can drag on the floor and stop the magnets from closing neatly.

For custom-size orders, check how the seller defines the size. Some listings may mean the full mesh panel, while others may expect the door opening size. Balcony frames, sliding tracks, and floor lips can change the answer.
Tape and hook-and-loop are the real weak point
No-drill installation is attractive, especially in rentals. The problem is the mounting surface. Dusty frames, old paint, textured wallpaper, sun-heated aluminum frames, and damp corners can all make adhesive lift earlier than expected.

Clean the frame first and let it dry fully. If surface damage matters, test a small hidden area before committing to the whole frame. Also check whether the option includes enough tape, clips, or extra fixing pieces for your doorway.
Magnetic closure is convenient, not airtight
The center magnet seam is the convenience point. You can walk through with laundry or groceries in your hands, and the panels can close behind you without a handle. But it is still a curtain, not a rigid screen door.

If the mesh is stretched unevenly or the top is installed crooked, the seam may leave a small gap. It is also not a safety gate or a containment product. It is designed for pass-through convenience, not for stopping someone from going through.
Wind changes the expectation
Balcony doors and patio openings can get more wind than product photos suggest. A light mesh curtain can flap, pull at the side tape, or lift near the bottom edge. Strong cross-breeze is where expectations need to stay modest.

I would think of it as making an open doorway less exposed, not as sealing the doorway. If you need a cleaner look, stronger durability, or better performance in wind, a framed screen door or roll-up screen is the more serious solution.
How the comparison options differ
For balcony or patio sliding doors, a sliding-door magnetic screen curtain is worth comparing. Measure the actual pass-through width and check whether tracks, handles, or side frames block the curtain.
A no-punching magnetic screen curtain is a comparison point if installation style is the priority. The key is not the wording alone, but the actual border, tape, clips, and frame contact shown in the product photos.
Fixed-size versions can be simpler if the listed size matches your doorway closely. If your door sits between options, custom sizing may avoid side gaps or floor drag.
Who should look at it
This is worth checking for a smooth balcony or kitchen door frame where a real screen door is hard to install. It also suits homes where people pass through often and do not want to open and close a rigid screen every time.
I would skip it if the frame is rough, the doorway gets strong wind, adhesive damage would be a serious problem, or you need a durable fitted screen. It is a temporary mesh curtain, not a security or safety door.
Final take
The custom-size magnetic screen door curtain is a fit-first product. The size definition, frame surface, adhesive border, bottom clearance, and magnet alignment matter more than the product thumbnail.
If your frame is smooth and you can measure carefully, it can be a simple way to make an open doorway less annoying. If the doorway is windy or awkward, the result can vary a lot.