A mid-century modern mailbox is the low, rectangular, flat- or slope-topped steel curbside mailbox introduced around 1960 by Sears, Montgomery Ward and manufacturers such as Leigh Products and Fulton as a modern alternative to the dome-topped "tunnel" mailbox that had been standard since Roy Joroleman designed it for the Post Office in 1915. It's identified by its proportion (about 7" wide, 7–8" high, 20–21" long), a two-tone baked-enamel finish with a color top and white bottom, an aluminum cap on the flag and an aluminum door pull, and, in the catalog presentations, an angled steel post. The Post Office created a "contemporary" category for this kind of box in 1962, a term USPS still uses.
Key facts
- Era: about 1960–1978 in catalogs; Fulton's "Sleek Suburban" stayed in production until 1993.
- Sellers and makers: Sears (1960–61 catalogs onward), Montgomery Ward, Leigh Products, Fulton Corporation, among 22–29 USPS-approved manufacturers listed 1970–74.
- Defining features: rectangular body, sloped/angled top, two-tone finish, aluminum flag cap and door pull, slim angled post.
- Sears changed the flag cap to a slotted flag mechanism in 1964, so cap-style flags date a box to 1963 or earlier.
- Materials: "heavy-gauge steel" with baked enamel; Sears advertised the finish as "tougher than your lawn mower finish."
Where did it come from?
The American curbside mailbox was standardized in 1915 when Roy Joroleman, a Post Office Department engineer, designed the arched-top box that farmers on Rural Free Delivery routes were required to use. He didn't patent it, so any manufacturer could make it, and for four decades nearly all of them did. Postwar suburbs were built on curbside delivery, and by the late 1950s the tunnel box looked out of place in front of a ranch house with a carport and a picture window.
Manufacturers responded with boxes that matched the houses. Sears' Spring–Summer 1961 Diamond Jubilee catalog offered a "heavy-gauge steel" box with a baked enamel finish, an aluminum door handle and flag cap, an angled steel post option, and two-tone colors, promising to replace "the 'old look' in R.F.D. boxes throughout the United States." A fall 1960 Sears catalog shows a similar box, which is the earliest dated example we've found. The full story is in History of the Mid-Century Modern Mailbox.
What are the defining features?
| Feature | Mid-century modern | Traditional (Joroleman) |
|---|---|---|
| Top | Flat, sloped or gently angled | Arched dome |
| Body | Rectangular, straight sides | Half-cylinder over a flat floor |
| Finish | Two-tone baked enamel; color/white | Galvanized or single-color paint |
| Flag | Slim, with an aluminum cap (pre-1964) | Rod flag on a bracket |
| Door | Flat panel with aluminum pull | Curved door with latch tab |
| Post | Angled or vertical steel | 4×4 timber or pipe |
| USPS class (1970–present) | Contemporary | Traditional |
What colors were they?
Two-tone with white, in the accent palette of the period: light blue/turquoise, orange, yellow, red, pink, mint and gray-green. These correspond closely to the exterior accent colors used on Eichler homes — muted body colors with one bold door or panel — which is why the boxes looked right in front of them.
Who made them?
Sears and Montgomery Ward sold them under house brands; Leigh Products (Michigan), Fulton Corporation (in business since 1906) and others manufactured them. USPS's 1970 approved-manufacturer list had 22 names and the 1970–74 lists 29; by a 2001 Postal Bulletin, only three were still producing mailboxes, and Gibraltar Industries had since acquired two of those three. Fulton confirmed to Modbox in 2013 that it stopped making its contemporary box in 1993 and no longer had the dies.
Why did they disappear?
The most likely explanation is price competition and consolidation. Contemporary two-tone boxes had more parts and more finishing than a stamped tunnel box, and as the mailbox business consolidated into a few high-volume producers, those models appear to have been dropped. By 2001 only three of the 29 makers listed in 1970–74 were still in the business.
What's a mid-century modern mailbox today?
Either a surviving original, a faithful reproduction, or a modern box in the same vocabulary. Modbox was founded in 2014 to reproduce the form after its founder couldn't find a period-appropriate box for a renovated mid-century house; a 2013 Atomic Ranch article had noted that "the retro market seems to be wide open." The reproduction was designed from catalog scans, an original Leigh box, and vintage patent drawings, and is covered by U.S. design patents D736,490 and D739,115. See Best Mailboxes for Mid-Century Modern Homes.
How do I identify a vintage one?
- Two-tone enamel, usually with a white lower half.
- An aluminum cap on the flag pivot (Sears, pre-1964) or a slotted flag (1964 and later).
- An aluminum pull on the door.
- Maker's stamp inside the door: Sears, Leigh, Fulton, and others.
- A USPS "Approved by the Postmaster General" marking, often stamped into the door.
- Dimensions around 7" × 7¾" × 21".
Where Modbox fits
The Modbox curbside mailbox is a reproduction of this form: 7" × 7¾" × 21¼", 20-gauge galvannealed steel, powder coated inside and out, two-tone or solid in twelve colors from original Eichler accent palettes, with an anodized aluminum flag cap and door pull and a 65° angled steel post based on the 1961 catalog inset. The Vista wall-mounted box carries the same angled housing.
Frequently asked questions
When were mid-century modern mailboxes made? From about 1960 (the earliest Sears catalog we've found is fall 1960) into the late 1970s, with Fulton's model lasting until 1993.
Is a mid-century mailbox the same as a "contemporary" mailbox? USPS's "contemporary" category (created in 1962) covers any non-dome curbside box, which includes mid-century designs and plain modern rectangles. Mid-century modern is the specific 1960s vocabulary within that category.
Are vintage mid-century mailboxes valuable? Modestly. Good examples sell for $150–$500 depending on condition and colors; new old stock is rare and brings more.
Can I use a mid-century mailbox for USPS delivery today? Yes. The form meets USPS's contemporary standard; a vintage box in working condition, or a modern reproduction, is acceptable at the curb.
Sources
- Modbox Journal, "Mid-Century Modern Mailbox | 1961 Sears Diamond Jubilee Catalog" — https://blog.modboxusa.com/2014/01/16/mid-century-modern-mailbox-1961-sears-diamond-jubilee-catalog/
- Modbox Journal, "Rare Vintage Sears Mailbox on eBay" (1964 flag change) — https://blog.modboxusa.com/2016/01/29/rare-vintage-sears-mailbox-on-ebay/
- Modbox Journal, "Mid-Century Modern Mailbox | any manufacturers left?" — https://blog.modboxusa.com/2013/09/28/mid-century-modern-mailbox-any-manufacturers-left/
- Modbox Journal, "Mid-Century Modern Mailbox | Fulton Corp." — https://blog.modboxusa.com/2013/10/02/mid-century-modern-mailbox-fulton-corp/
- 99% Invisible, "Open-Source Icon: Rural America's Classic Metal Mailbox-with-Flag Design" — https://99percentinvisible.org/article/open-source-icon-rural-americas-classic-metal-mailbox-with-flag-design/
- USPS, "Curbside Mailboxes: A Chronology of Size Changes" — https://about.usps.com/who-we-are/postal-history/curbside-mailboxes-size-chronology.pdf