What types of spaces are a 248W, 39,680-lumen linear high bay typically specified for?
This output class is specified for higher-ceiling warehouse aisles, distribution picking lanes, manufacturing lines, and shipping/receiving zones where a longer linear housing supports uniform coverage across racking rows or work cells.
How is fixture spacing typically approached with a 39-inch linear high bay?
Linear housings are commonly aligned parallel to aisles or process lines to keep illumination consistent along the working direction. Final spacing should be set from the photometric file and the target average and minimum foot-candle levels for the task.
What does the 110° distribution do for uniformity in open industrial areas?
A 110° beam spreads light broadly enough to create overlap between adjacent fixtures on a grid layout. That overlap supports uniformity on the work plane and helps limit isolated hot spots directly under each fixture compared with narrower optics.
What is the luminous efficacy of this 248W, 39,680-lumen configuration?
39,680 lumens divided by 248W calculates to 160.0 lm/W. Delivered illuminance depends on mounting height, spacing, reflectances, and any obstructions that create shadowing.
When would 4000K be specified instead of 5000K in a high-bay environment?
4000K is commonly specified for mixed-use industrial interiors where visual comfort and sustained occupancy are priorities. 5000K is selected where higher contrast supports inspection, label reading, and camera monitoring consistency in active work zones.
What does CRI 80 support for warehouse and manufacturing tasks?
CRI 80 is a common baseline for recognizing labels, color-coded safety markings, and general material differentiation in industrial environments. If a process requires tighter color discrimination, confirm any project-specific spectral requirements before approval.
How does 0–10V dimming get used in larger facilities?
0–10V dimming supports integration with occupancy sensors and scheduling so zones can be reduced during vacancy periods. It also supports commissioning trim so installed light levels can be set to the lighting schedule without changing drivers or optics.
What does the 120–277V driver range support for electrical distribution?
120–277V input supports standard commercial branch circuits, including 277V lighting circuits common in warehouses and industrial buildings. This reduces the need for voltage-specific variants across multi-site deployments.
What does damp-location rating cover for an aluminum-bodied high bay?
Damp-location rating supports installation where non-corrosive moisture or condensation can occur, such as unconditioned storage or loading-adjacent interiors. It is not intended for direct spray, washdown, or areas requiring a wet-location luminaire.
How does a frosted polycarbonate lens change glare and visual comfort at height?
A frosted polycarbonate lens diffuses the LED source to reduce high-angle brightness and soften hotspotting. In high-bay layouts, this can reduce discomfort glare when fixtures are visible at long viewing angles across open floors.
What does DLC Premium listing typically support for project documentation?
DLC Premium listing is commonly referenced for utility rebate programs and for documentation requiring third-party verification of luminaire performance. Confirm local utility requirements, since eligibility rules and required paperwork vary by territory.
How should 100,000-hour rated life and the 10-year limited warranty be handled for lifecycle planning?
For long-cycle planning, document the selected CCT by zone and retain the submittal package so replacements match color and control behavior. Review the 10-year limited warranty terms for coverage specifics related to drivers, LED components, and claim documentation.
What does the -4°F minimum operating temperature indicate for cold-start performance?
A -4°F minimum operating temperature indicates the driver and LED system are rated for cold starts down to that ambient temperature. For spaces that can fall below -4°F, verify site conditions and any manufacturer guidance before specifying.
