Design by Poul Henningsen, 1926.
By Louis Poulsen.

PH 4½ - 4 Glass Pendant is a member of the PH 3-shade family originally conceived in the winter of 1925-26 for a large exhibition hall in Copenhagen, Denmark called "Forum" and is based on the principle of a reflecting multi-shade system, creating a harmonious and glare-free illumination. The shades are drawn over a logarithmic spiral, with the center of the light source placed in the spiral's focal point. The PH 4½ - 4 Glass Pendant provides soft illumination.

White opal handblown glass shades which have been sandblasted on the undersides for uniform light distribution. High luster chrome-plated, extruded aluminum suspension and stem. Spun aluminum internal anti-glare shades with painted lilac finish. 12 foot long 3-conductor, 18 AWG black PVC covered power cord. White ceiling canopy which mounts to 4" octagonal junction box.