Really unhappy with the whopping 3.5 inch threshold we have to step over, especially because I asked the installer about low thresholds at our very first meeting. The pictures in the brochure all showed hardly any threshold, with inside and outside being the same level, but the installer told me they were trying to ‘sell you the dream’ and what he recommended was a 'weathered threshold’ to prevent driving rain coming in. What he didn’t tell me was that you can still get a low threshold with this product but you have to get your builder to remove a layer of brick, creating a recess in your floor in which the bifolds sit, sinking the threshold into the floor. I only figured this out many weeks later, after the order was placed, because neither the Origin brochure or website tell you this! The website did have some diagrams in which the same effect was achieved by essentially raising the surrounding floor with screed, which didn’t seem viable unless you want to raise the entire downstairs floor including other rooms. I was really confused as to how low thresholds didn’t appear to be practical and yet I was seeing so many pictures of them on the internet. I havn’t tripped over the 3.5 inch threshold yet, but that’s partly because I’m so aware it’s there - it annoys me that much. Someone will trip on it one day, but it’s the aesthetics that bother me as much as having to step over it. Considering we’ve spent 6k on this product, I don’t think enough information was available and I feel let down by Origin and the installer.