Application Environment Wet / Damp / Dry Location approved. IP 68. Drive Over Rating 9,700 lbs (4,400 kg) Mounting Recessed: Designed to be cast into earth, gravel, or concrete or inserted into paving stones or pavers. Included backbox, flange and level for direct burial or casting applications. MK1 mounting kit (optional): Recommended for easy installation on vertical surfaces (e.g. stair risers, walls), and downward-facing surfaces (e.g. ceilings, soffits). See "Mounting Options & Dimensions, " MK3 mounting kit (optional): Recommended for thicker concrete slab and paving stone in-ground installation. Custom rectangular electrical box option is available for stair riser&wall installation. Electrical Power Supplies Remote LED drivers (120-277V AC input, constant current output): Fixtures to be wired in series. Control On/off control | Dimming: ELV or 0-10V dimming with appropriate drivers Other options (consult factory): TRIAC/MLV, DMX, DALI, Casambi, Power over Ethernet Luminaire Construction LED Light Source Light Quality: Colour Rendering Index (CRI) - Ra=90+ (80+ for 2200K) | R9=50+ Colour Consistency: 3-step MacAdam: W22S, W35H, W41H 2-step MacAdam: W27H, W35H Standard Compliance ADA-compliant WELL standard – Feature 58: Color Quality Material Fixture: machined stainless steel (316) Supplied with Standard installation housing: Comes with an octagonal back box, a flange, an integral leveling device, a plastic cap, gel filled wire nuts, and silicone grease. Cable: 6” (152mm) factory-installed wire lead Warranty & LED Life 5 years limited warranty Estimated useful life of LED is 50,000 hours.