GPA/PK IMPACT-RESISTANT WALL AND CEILING LUMINAIRE The GPA/PK surface-mount luminaire is ideal for residential construction and satisfies circularity requirements with our LED retrofit solution. The GPA/PK guarantees you a high light output. This unit with its vandal-proof flat lens can be mounted in various ways as a wall luminaire, ceiling luminaire or canopy luminaire. This makes the highly impact-resistant (>4 x IK10) GPA/PK suitable for illuminating entrance halls, external access galleries, porches, stairwells, front doors and back doors. The GPA/PK is waterproof (IP65).