Invisible photo frame

For those who are seeking cheap and invisible photo frames, I made these. 

it is good for all standard photo sizes, the frame holds the photo just by the corners, so you can almost not see it. But you are still able to quickly change photos on the wall. 

There are 2 types. Normal for just 1 photo and another with an extra mount point for a secondary photo (we use it as a big photo of the place and then a smaller one with me photo of us (see included photos)

Frames are made for both screwing or using double-sided tape.

All dimensions are in cm (mm). For different sizes I recommend just change scale (dimension of photo + 1mm)