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Galvanized metal barns with long, simple roof planes on a farm under a clear blue sky
Hung box profile · formed at 7 inches

Square-Sided Box Gutters For Barns, Shops & Modern Homes

Box gutters, as we form them, are hung seamless troughs with straight sides and a flat floor, rather than the concealed box gutter built into an old cornice. Gutter Solutions LLC rolls them on site at 7 inches for long eaves and wide roof planes that swamp a house-size K-style.

  • 7-inch box, formed on site
  • Square face for clean lines
  • Built for big roof planes
  • Outlets and downspouts sized up
  • Aluminum or copper

Get Your FREE Box Gutter Estimate

Long building? We measure every eave and outlet.

So we know which crew covers you.

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  • Formed at 7 inchesCapacity scaled with outlets
  • Barns to storefrontsLong, simple roof planes
  • Hung on the eaveNot built into the roof
  • Written specificationOutlets and hangers listed
White box gutters and a box downspout on the roof and porch eaves of a white two-story house
Hung, not built inMounted along the eave

White box gutters and a box downspout we hung on a two-story house and its porch.

Two different things

Hung box gutters versus the built-in kind

The name covers two very different things. On older churches, storefronts and historic houses, a built-in box gutter is a lined channel set into the roof edge or hidden behind the cornice. It is part of the roof, so relining one falls to a roofer, and Gutter Solutions LLC stays out of roofing.

The box gutters we install hang on the outside of the building instead. Each is a rectangular trough, straight on both sides and flat across the bottom, formed at 7 inches and fastened along the eave. It is measured, hung and pitched like the rest of our seamless installs.

Short answer

A hung box gutter is a square-sided, flat-bottomed seamless gutter mounted on the eave. It carries more water per inch of width than K-style or half-round, which suits big roof planes, farm and commercial buildings and modern homes.

Where it belongs

Where a box gutter looks right, and where it does not

Good fit

Barns, shops and equipment sheds

Long, plain eaves and wide roof planes are what a 7-inch box is made for. A farm building is the classic case: one simple roof, a lot of water and few good places for a downspout.

Good fit

Modern and farmhouse-style homes

A square face lines up with crisp fascia boards, standing-seam roofs and board-and-batten siding. A dark box profile on a light house is a deliberate, architectural look.

Good fit

Offices and small commercial roofs

Offices, small shops and rental duplexes often need more capacity than K-style gives, and a square face suits their plain eaves. Warehouse-scale roofs usually get the 7-inch D instead.

Think twice

Ornate and historic facades

A square trough looks wrong under a Victorian cornice or a curved porch roof. Those houses usually want half-round, and some already have a built-in gutter that needs a roofer instead.

The profile

Straight walls and a flat floor

Seen end-on, the box is close to a plain rectangle: a flat back against the fascia, a straight face with a hemmed top edge and a flat floor. With no curve to give up, nearly the whole cross-section carries water.

Aluminum Box Gutters seamless gutter

Aluminum

Most box runs are aluminum: light across long spans, rust-proof, and prefinished in colors that suit metal buildings as well as houses.

Copper Box Gutters seamless gutter

Copper

A copper box gutter is a statement piece on a modern house or a storefront, with soldered corners and a finish that darkens as it ages.

Steel Box Gutters seamless gutter

Steel

Stiff and dent-resistant, which appeals on farm buildings, but it depends on its coating. Near the coast, ask at your estimate whether it suits the site.

Need help choosing the metal? Read about gutter materials.

Compared

Box gutter vs. K-style

Most houses already wear the familiar K-style profile, so it is the fair comparison.

Compared onBoxK-style
FaceStraight and squareMolded ogee curve
CapacityMore per inch of widthLess than box, more than half-round
Widths we rollOne: 7 inchesThree: 6, 7 or 8 inches
OutletsLarger, and more of them on long runsStandard rectangular outlets
Best onBig planes, farm and commercial buildings, modern homesMost houses with traditional trim
LookClean, architectural, utilitarianReads like crown molding

Guttering a warehouse, a shopping strip or an apartment block? Look at 7-inch D commercial gutters, or open the full four-profile comparison.

Planning a long run

How we lay out a box gutter system

With one width to work with, capacity comes from the layout. The inputs are the ones in our roof-area sizing guide.

  1. 01

    Measure the roof, not the wall

    We work out the roof area that drains to each eave, including any upper roof that sheds onto a lower one.

  2. 02

    Place the outlets

    A long eave, like the ones on poultry houses and onion sheds in Tattnall County, may need an outlet at each end and one in the middle, so water travels a shorter distance before it drops.

  3. 03

    Size the downspouts

    The downspout is often the real bottleneck, so a box run gets downspouts matched to what the trough can deliver.

  4. 04

    Set pitch, hangers and joints

    A 7-inch trough full of water is heavy, so the hangers go in closer together and the run is pitched to empty after the storm. On a very long eave, expansion joints at the high points let the metal move with the heat.

  5. 05

    Plan the discharge

    On farm lots and paved sites, the water needs somewhere to go that will not wash out a drive or pool at a door. In 2024 Tropical Storm Debby washed out roads across Jeff Davis County, most of them dirt. Bare ground scours the same way under a downspout, so on farms around Hazlehurst discharge goes onto firm ground or into a buried line.

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Box gutter questions

Questions about box gutters

Still have a question? The quickest answer is a phone call, and we will talk it through with you.

(912) 202-0537

No. A built-in box gutter is a lined channel inside the roof edge or cornice, found on older buildings, and it belongs to the roof. The box gutters we install hang on the eave like any other seamless gutter.

If your building has a built-in gutter that leaks, the repair is a roofing job, and we do not do roofing.

Modern gable-roofed house with dark vertical siding and a metal roof at dusk
Free box gutter estimate

Big roof? Let us measure it properly

Tell us the building type and address. We will walk every eave, work out how many outlets the roof needs and write up the box system, hangers and downspouts included.

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