04 — Durability
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Quality outlives the buyer.

L5 Pendant  ·  Active residential units by decade of manufacture

75% 50% 25% 0% Active residential use (%) Latest 71% 76% 68% 82% 89% 96% 1960s 1970s 1980s 1990s 2000s 2010s n = 142,000 units tracked
This is the Danish PH5 Louis Poulsen (1958) design system, applied by Curio Design — a design-style library for AI agents. Full Danish PH5 Louis Poulsen (1958) guide → designbycurio.com/learn/danish-ph5-louis-poulsen-1958