Poul Henningsen’s PH 3½-2½ Floor Lamp (1927) is a member of the PH 3-shade family, a series of light fixtures designed by Henningsen to produce glare-free and economically distributed light. The three glass shades of the PH 3½-2½ Floor Lamp are arranged in a relationship of 3:2:1, drawing their reflections over a logarithmic spiral, which places the light source directly in the spiral’s focal point. Allowing most of the light to reflect outward and downward from the matte undersides, the glass shades enable 12% of the light to penetrate and contribute to the overall room lighting. The result is a soft, evenly distributed glare-free glow. Bulb (not included): 100W/120V/A19. Made in Denmark by Louis Poulsen.