Review on Light Filtering Cellular Honeycomb Shade: Anthracite, Cordless And Single Cell, 18" W X 48" H by Simo Whisperer

I'm going to preface this with: I read directions while viewing the parts and picturing the process and have a lot of mechanical and assembly experience/natural aptitude/innate fearlessness.Having so said, I screwed up the first set of these blinds because of hubris. I wanted to shorten them, 55" window and 72" length seemed like they would stack up and be awkward. My brilliant idea led to the second purchase of these blinds, an intimate knowledge of the mechanism that makes cordless blinds work and how to take apart and reassemble it, and that the blinds' mounting hardware takes a couple of tries. The previous installed blinds were a cheap fix, without the width variety of these, resulting in an annoying 1" gap where the light, heat and the window edges were visible and un-ignorable (Not a word, but you know what I mean- it was an eyesore) and the window looked shabby despite any other window treatments. The blinds were available in 32" width and the white isn't a paint kind of pure white because they are two layers fabric. I mentioned it to clarify what to expect, but they are obviously white. The width is exactly what is stated, measure two or more times with different mearsuring tools for accuracy for the width of the chosen mounting, especially for an inner mounting.***** (tangential topic: if you're doing more work, try to use only one measuring tape for the whole process for consistency. If buying online, remember the metric to imperial conversion isn't guaranteed to be accurately reported)*****On topic advice from my personal adventures: 1) Pay attention to the fact that the cap pieces are left and right specific. OI used the label on the top as a reference. The pictures are not detailed but they will be a solid guide. Don't force anything into place, some of the tabs are delicate. Check the L or R moulded in the inside of the cap.2) Mounting bracket installation observation: Inside and outside mounting requires different hardware provided included 4 hex head screws for outter installation using the back of the bracket; 2 flat or pan head screws for inner mounting, 1 for each side using the top of the bracket in the slot in the center of the bracket.<<Really obvious advice: use different anchors than the provided ones unless you are a wizard and can make them work>> 3) Installing the blinds works by hooking the lip on the front of the top rail onto the spring loaded tab facing you and "rolling" the rail until it snaps into the back bracket. Check both sides to make sure they are both fully clamped. 2a-should be part of 2) The brackets need to be spaced exactly from your chosen reference point on the inside from window to frame edge avoiding puncturing the window's structure! The review, resumed: These blinds are light diffusing and noticeably insulative. I'm very happy with this product, even though I had to buy them twice!Don't do anything to alter them unless you know what you're doing or if you're me, they aren't designed to be customized by untrained/inexperienced consumers.