I-LINE, THE ARCHITECTURAL LIGHT. I-Line Slim is a smooth and sleek lamp, with a clean, architectural line. Designed by long-time LZF collaborator Burkhard Dämmer, I-Line is available in two sizes: short and long suspension. I-Line’s unfussy design is perfect in places and spaces that call for a practical, yet elegant, luminaire: above a countertop or a work table, for example. I-Line’s wood veneer, dimmable LED, and light-filtering diffuser, provide both direct and ambient light. In I-Line, Burkhard Dämmer has created a lamp that is simple, symmetrical and serene.