A useful fixture schedule gives suppliers enough detail to quote the same requirement. Start with the task and installation conditions, then list the performance and documents needed for each fixture type.
Retail and display lighting
Record display locations, mounting positions, aiming needs, and the surrounding light level. Compare Ra and R9, then view merchandise under a sample. Include track compatibility and repositioning needs.
Office and hospitality ceiling fixtures
Check dimensions, mounting method, glare from occupied positions, and access to the driver. Compare the actual room layout and lighting controls, not only a panel’s headline lumens.
Workshops and service areas
Identify detailed tasks, vehicle routes, obstructions, and possible moisture or dust exposure. Check impact protection, cleaning access, and light on vertical work surfaces.
Recessed fittings
Confirm cutout, void depth, insulation-contact suitability, fire requirements where applicable, and driver access. Check the optic and shielding from normal viewing positions.
Exterior lighting
Specify water exposure, impact risk, corrosion conditions, temperature, and local light-spill limits. An IP rating does not establish corrosion resistance or the suitability of every mounting arrangement.
Warehouse and industrial fixtures
Use aisle and rack geometry with mounting height and photometry. Check vertical light, glare, sensor coverage, and access for maintenance. Review the installed layout before choosing a one-for-one replacement.
Color temperature and color rendering
State CCT and color tolerance for fixtures seen together. Use Ra and R9 for color comparison, with samples where appearance matters. A higher Kelvin value does not mean greater color accuracy.
Controls and driver compatibility
List the control method, driver model, minimum light level, startup behavior, and required functions. Test the proposed combination and record approved alternatives.
Keep the order traceable
The schedule should include model, quantity, input voltage, watts, lumens, optic, CCT, color rendering, dimensions, mounting, protection ratings, controls, documentation, and warranty. Require review of changes before production.
Frequently Asked Questions
Which specification should I check first?
Start with the task and installation conditions. They determine what light distribution, protection, mounting, and controls are needed.
What makes two quotes comparable?
The same performance brief, product configuration, documentation, warranty, delivery terms, and commissioning scope.
