LED Wall Pack Buying Guide: Lumens, Photocells, and the Full-Cutoff Spec That Keeps You Dark-Sky Compliant

Lumens First, Mounting Height Second

Wall packs span a wide band, from about 2,000 lumens for a doorway to 15,000 and up for a loading dock. The mistake most buyers make is shopping by wattage. Stop. Wattage tells you how much power the fixture draws. Lumens tell you how much light actually lands on the ground. Two fixtures can both read 50W and differ by 40% in output.

Match the lumens to the mounting height. A 3,000-lumen pack at 8 feet does a fine job over a single door. That same 3,000 lumens at 18 feet washes out into a dim puddle. Here's the table we hand buyers:

Lumen Range by Mounting Height

Mounting Height	Lumen Range	Typical Use
8-10 ft	2,000-4,000 lm	Doorways, walkways
12-16 ft	4,000-8,000 lm	Building perimeter, alleys
18-25 ft	8,000-15,000+ lm	Loading docks, parking areas

Color temperature matters less outdoors than people think. 4000K is the safe default for commercial perimeters; 5000K reads brighter but looks harsh against brick. CRI 70 is fine for parking, because nobody judges skin tone under a wall pack. Save the CRI 90 budget for retail interiors.

Full-Cutoff Is the Compliance Spec

More cities write dark-sky ordinances every year, and full-cutoff is the phrase that shows up in them. A full-cutoff fixture sends all light downward, zero above 90 degrees. A semi-cutoff lets light spill upward. If the spec sheet doesn't say full-cutoff or IDA dark-sky approved, assume it isn't.

Why it matters beyond compliance: upward light is wasted electricity, and it's the light your neighbors call the city about. Full-cutoff fixtures put more of the light on the ground where the work actually happens. The International Dark-Sky Association keeps a list of approved fixtures, and most municipalities reference it. Check the local ordinance before ordering. A spec that passes in one county fails in the next one over.

Photocell: Built-In vs Separate

Photocells switch the light on at dusk and off at dawn. Built-in is simpler to install. The catch is the fail mode. Some cheap sensors fail in the on position, and you come back to a fixture burning 24/7 for a month. Others fail off, and the dock stays dark.

Ask the supplier one question: does the photocell fail on or off? For a security light you want fail-on, so the light keeps burning even if the sensor dies. For an energy-conscious client you might want fail-off. There's no right answer, but there is a right question. Separate twist-lock photocells cost more up front and save a full fixture swap later. For anything mounted above 12 feet, we lean separate.

IK Rating and the Vandalism Question

Outdoor wall packs take abuse: rocks, trucks, weather. IP65 or IP66 covers the weather. IK rating covers the impact. IK08 survives a 5-joule impact, a small object dropped from height. IK10 survives 20 joules of deliberate hammering. For a school, a parking garage, or a transit wall, IK08 is the floor. For anything at ground level in a rough neighborhood, spec IK10 with a polycarbonate lens instead of glass.

Surge protection is the spec suppliers love to skip. Outdoor fixtures on the same circuit as signage and HVAC take voltage spikes. Ask for 6kV surge protection minimum, 10kV if the area gets real lightning. It's a $3 component that saves a $300 driver.

Common Questions from Buyers

What lumen output do I need for a wall pack?

Match lumens to mounting height, not wattage. At 8 to 10 feet, 2,000 to 4,000 lumens covers a doorway or walkway. At 12 to 16 feet, step up to 4,000 to 8,000 lumens for a building perimeter. At 18 to 25 feet, a loading dock or parking area needs 8,000 lumens and up. Two fixtures can both say 50W and differ by 40% in output, so ask for delivered lumens, not wattage.

Does full-cutoff vs semi-cutoff actually matter?

Yes, and it's showing up in local law. A full-cutoff fixture sends all light downward, zero above 90 degrees. A semi-cutoff lets light spill upward. Cities with dark-sky ordinances reference the International Dark-Sky Association approved list, and full-cutoff is the term in the code. Beyond compliance, upward light is wasted electricity and the light neighbors complain about. Full-cutoff puts more light on the ground where the job is.

Built-in or separate photocell?

Both work, but they fail differently. Ask the supplier whether the photocell fails on or off. A cheap sensor can fail in the on position and burn 24/7 for a month, or fail off and leave a dock dark. For security, you want fail-on. Separate twist-lock photocells cost more up front but swap out without replacing the whole fixture. Above 12 feet, we lean separate for anything the client plans to keep for years.

What IK rating do I need for vandal-prone areas?

IP65 or IP66 handles weather; IK rating handles impact. IK08 survives a 5-joule impact, IK10 survives 20 joules of deliberate hammering. For schools, parking garages, and transit walls, IK08 is the floor. For ground-level fixtures in rough areas, spec IK10 with a polycarbonate lens instead of glass. Also confirm surge protection of at least 6kV, or 10kV in lightning-prone regions, since wall packs share circuits with signage and HVAC.

Source wall packs with verified lumens, full-cutoff optics, and surge protection from Compare2Best.

This article is produced by the Compare2Best knowledge team and reviewed by outdoor lighting specialists. Updated August 2026. Cutoff requirements, lumen targets, and surge levels vary by local ordinance and site conditions; confirm with your supplier and local code before ordering.