I've got a challenge similar to a previous thread on this forum (https://www.workshop.bunnings.com.au/t5/Living-and-Bedroom/How-to-refit-an-existing-built-in-wardrobe/td-p/50045).
I've got two built-in wardrobes that I want to refit with a modular storage system. It seems like Multistore is no longer in production, their site is dead and there are no products on your website. I am looking for a decent alternative which is 450mm deep and can be combined to cover a 3500mm wide / 2400mm high area behind existing sliding doors. IKEA has a modular system that is 400mm deep (PLATSA), but I'd like to utilise the remaining 50-100mm available. I would also like to get some tips on how to best make this look properly integrated and not just a big unit loosely placed inside a cavity if that makes sense.