Highest recommendation for The Louver Shop of Maryland. Greg is the ultimate professional, very helpful, installation flawless and on time. The roller shades installed 7 years ago still like new, stay clean without work, operate effortlessly. The few windows where we chose Venetian blinds we've just had Greg redo with roller shades (our mistake: (slats need dusting, roller shades no dust!). Great product, super company.