We have vinyl verticals out of necessity at the patio door in the living room. For the purpose of going out on the patio, it's just easier than the curtains and drapes, then the horizontal blinds I had tried several decades ago. The vinyl blinds are heavy enough that they are semi room darkening but they are able to be cut at the bottom should they wind up being hung too low. Found that out when I decided to also have them installed at the opening to our kitchenette since the opening is several inches lower than the top of the patio door. I tried having verticals professionally installed in the master bedroom but the company really screwed it up, so they were removed. I realized from that experience that I preferred horizontal blinds at the bedroom windows which are approx 35" X 70". I got room darkening metal ones for them. I've had the vertical blinds in the living room for probably a couple of decades now. No problems. I don't remember who installed them, however.