Cutoff, Output, and Control on a Building Exterior
A wall pack is the workhorse of building perimeter lighting, and the three decisions that shape a specification are how the fixture controls its light, how much of it there is, and what turns it on. Getting the first one wrong is what generates complaints from neighbors and comments from inspectors. A covered fueling station, drive-through, or soffit is a separate case entirely, taking an overhead fixture from Lumera's canopy lights collection rather than anything on a wall.
Full-Cutoff, Non-Cutoff, and Up/Down
Cutoff describes how much light escapes above horizontal, and it is increasingly a code question rather than a preference.
- Full-cutoff, sometimes called dark-sky compliant: all light directed downward with no spill above horizontal, which cuts glare and light trespass and satisfies dark-sky ordinances
- Non-cutoff, sometimes called semi-cutoff: light spread wider and further out from the wall, with some going upward
- Up/down: a deliberate split that washes the wall surface above the fixture as well as lighting the ground below it, used where the building face is meant to be seen
Many municipalities now require full-cutoff on new exterior installations, and the requirement is enforced at inspection rather than assumed. Confirm the local ordinance before ordering a site's worth of fixtures, because swapping non-cutoff units after the fact is expensive and visible.
Sizing by Lumens, Not by Replacement Wattage
Most wall pack purchases are replacing older metal halide or high-pressure sodium heads, and the tempting shortcut is to match wattage. That does not work, because LED delivers far more light per watt and the ratio varies between product lines. Compare the delivered lumen figure against what the old fixture actually produced, and check the manufacturer's stated replacement equivalence on the specific model rather than applying a general rule.
Mounting height matters just as much. Light falls off with distance, so a fixture that lights a doorway well at 10 feet is underpowered on the same doorway at 20 feet. For a loading dock or a large perimeter, ask for a photometric layout before ordering, which most manufacturers provide at no cost and which converts guesswork into a fixture count. A parking lot is a different calculation entirely and needs pole-mounted fixtures from Lumera's area lights collection rather than anything on the building face.
Setting Wattage and Color on Site
A large share of current wall packs carry small switches on the fixture that set wattage, color temperature, or both before installation. On a multi-building job this collapses several part numbers into one and lets the final level be decided on site once the area can be judged after dark. Set every fixture on a facade to the same position and record what that position was, because a replacement installed later on a different setting stands out immediately against the others.
Photocell Options and What They Actually Mean
Wall packs are sold three ways and the labels are easy to misread. A photocell-included fixture arrives with the sensor fitted and needs nothing further. A photocell-ready fixture has the socket or knockout for one but does not include the sensor, so it has to be ordered separately. A fixture with no provision at all needs its control handled at the circuit instead.
Check which one a listing is before ordering a full site, since discovering the difference on installation day means either a return trip or fixtures that stay on around the clock. Lumera's photocells collection covers the sensors sold on their own.
Surge Protection and Why It Belongs Here
Exterior fixtures sit on long circuit runs and are exposed to both lightning-induced surges and the switching transients a building's own equipment generates. Many commercial wall packs include integral surge protection rated in kilovolts, and on a site with a history of premature driver failures that rating is worth comparing between candidates. Where the building has no protection at the service, adding it there protects the exterior circuits along with everything else in the building.
Wall Pack, Flood Light, or Area Light
These three cover exterior lighting between them and are not substitutes for one another. A wall pack mounts flat on the wall and washes the ground below and around it, which is perimeter and doorway lighting. A flood aims an adjustable beam at a specific target such as a sign or a facade, and Lumera's flood lights collection covers that fixture type.
An area light sits on a pole and lays down a controlled distribution across open ground. Using wall packs to light a lot from the building face produces bright spots near the wall and darkness at the far end.
Where the fixture needs to respond to motion rather than run all night, the security lights collection covers units built around that trigger.
Mounting, Voltage, and Installation
Most wall packs mount over a standard exterior box, and the box has to be weatherproof and rated to carry the fixture. Confirm the existing box before ordering a replacement, since older installations often have a box that no longer meets current requirements. Commercial fixtures typically accept a universal input covering 120V through 277V, with 480V versions sold as separate part numbers rather than a setting, so verify the building's actual service voltage before placing a site order.
These are line-voltage fixtures mounted at height on building exteriors, so a licensed electrician should handle the circuit, the connection, and the mounting, and confirm the fixture is rated for wet-location exposure at its intended position.
Wall Pack Questions, Answered
What is a full-cutoff wall pack and do I need one?
A full-cutoff fixture directs all its light downward with no spill above horizontal, which reduces glare and light trespass. Many municipalities now require it on new exterior installations and enforce it at inspection. Confirm the local ordinance before ordering, because replacing non-cutoff fixtures afterward is costly.
What wattage wall pack replaces my metal halide fixture?
Do not match wattage directly, since LED produces far more light per watt and the ratio varies by product line. Compare delivered lumens against what the old fixture actually produced, check the manufacturer's stated equivalence for that specific model, and factor in mounting height because light falls off with distance.
What is the difference between a wall pack, a flood light, and an area light?
A wall pack mounts flat on a wall and washes the ground below and around it. A flood aims an adjustable beam at a specific target like a sign or facade. An area light mounts on a pole and spreads a controlled distribution across open ground, which is what parking lots need.
Do these fixtures include a photocell?
It depends on the model. Fixtures are sold with a photocell fitted, photocell-ready with a socket but no sensor, or with no provision at all. Check the listing before ordering a full site, since a photocell-ready unit needs the sensor bought separately.
What is an up/down wall pack for?
It splits the output deliberately, washing the wall surface above the fixture as well as lighting the ground below. That suits building faces meant to be seen at night, such as entries and architectural facades, rather than pure security or perimeter coverage.
Can wall packs run on 480V?
Some models are built for it, but they are separate part numbers rather than a switch setting on a standard fixture. Most commercial wall packs accept a universal 120V through 277V input. Verify the building's actual supply voltage before placing a site order.
