Danmer Custom Window Coverings At Danmer, we are dedicated to manufacturing the finest custom window coverings in the world. From our best in the industry product design and quality, to our relentless attention to detail we expect to surpass your expectations every time. Combine this with our outstanding 24/7 customer service and world-class team of window covering experts, all committed to making our customers happy. We treat every customer like they were our friends and family. That's the Danmer Difference.