PH 4½-4 Pendant by Louis Poulsen is a glass-shade pendant in Poul Henningsen's three-shade family, combining the optical precision of the logarithmic-spiral shade system with white opal glass to produce a pendant that is as visually luminous as it is functionally resolved. Henningsen developed the three-shade system from 1925–26, and the glass variants occupied a special position in the family — more demanding to manufacture, more visually arresting in use, and capable of producing a quality of ambient light that no metal-shade equivalent could match. The 4½-4 ratio produces a pendant in which the shade stack is relatively compact vertically, giving it a broad, slightly flattened silhouette and a wide, even light distribution.

The PH 4½-4 Pendant's generous diameter and flat profile make it particularly effective over large dining tables, in double-height residential spaces, in restaurant environments and in any interior where a pendant needs to command a significant ceiling position without becoming architecturally aggressive. The opal glass shades glow softly from within when lit, creating a warm luminous presence that enriches the surrounding space. The downward component of the light distribution is broad and even, providing comfortable illuminance over large table surfaces.

For architects and interior designers, the PH 4½-4 Pendant DWG drawing and CAD block support accurate pendant placement, ceiling clearance verification and lighting-layout documentation. The 3D model and Revit family enable BIM-accurate project documentation and IFC-compatible coordination. An authoritative specification resource for residential, hospitality and restaurant interior projects where high-quality PH glass pendant lighting is specified.

Available as a 2D DWG drawing, 3D model, Revit file and IFC file.