Areas · Montgomery County
Reels and spools in Gaithersburg: labs, offices and flex space on I-270
GAITHERSBURG, Md. — Gaithersburg, with ZIPs 20877 to 20879 and Montgomery Village in 20886, sits in the middle of the I-270 corridor among offices, laboratories, flex buildings and new neighbourhoods. Its reels come from that building, and the desk picks them up from sites and yards across the city.
From the reel desk · Checked 9 November 2026
Schematic line map, not to survey: Gaithersburg marked, with I-270 drawn heavier. The Potomac, the Anacostia, the District line and the Beltway are drawn for bearings.
Fact box: Gaithersburg
- ZIPs
- 20877, 20878, 20879, 20886
- Main roads
- I-270, Route 355, MD-124, MD-117, MD-200 (ICC)
- Federal campus
- National Institute of Standards and Technology
- Utility
- Pepco (most of the county)
The I-270 corridor
I-270 runs from the Beltway to Frederick, and the stretch through Rockville and Gaithersburg is lined with office parks, laboratory buildings and flex space for research and technology firms. The National Institute of Standards and Technology has its main campus in Gaithersburg. Around them, planned neighbourhoods like Kentlands and Crown, and new apartments near the corridor, add housing.
What labs and flex buildings use
Laboratory and research buildings are heavily wired. They need big feeders for equipment, emergency power, controls and data. When a lab is built or refitted, the reels left behind run from small building wire reels to 48 and 60 inch reels for feeders. Flex buildings, which are part warehouse and part office, use long runs of branch and feeder cable.
Federal work
NIST’s campus, like other federal campuses in Montgomery, is renovated and extended over long cycles. The Comptroller of Maryland counts about 54,000 Montgomery residents working for the federal government, and $46 billion in federal contracts for work in Maryland in fiscal 2024. Contractors on federal work have their own site rules; the desk will work to them.
How pickups work here
Gaithersburg sites usually have parking lots or service yards, which makes pickups simpler than in the District. The desk will ask:
- Where the reels are and whether a flatbed can reach them.
- Whether there is a forklift on site.
- The flange sizes and builds. Plywood reels from building wire are common and welcome.
For a site that will produce reels for months, a recurring pickup keeps the yard clear.
Buyers
Gaithersburg homeowners ask for table and patio reels. Farms to the west in the Agricultural Reserve, around Darnestown and Poolesville, ask for large reels.
Getting here
I-270 runs through the city with interchanges at Shady Grove Road, MD-124, MD-117 and Watkins Mill Road. Route 355 (Frederick Road) runs parallel. The Intercounty Connector ends at I-270 just south of the city.
Sending a request from Gaithersburg
- Count and measure. Count the reels and measure the largest flange edge to edge across the face. A photo with the tape in it is better than a guess.
- Check the build. Nailed lumber, plywood sheet, steel or plastic. Look for a stencil or tag naming the maker and the reel number.
- Set aside steel and tagged returnables with their serial numbers. Those go back to the maker, not to the desk.
- Say where they stand: yard, dock, garage level, alley or curb, plus clearance, gate hours, badging or escort a driver needs.
- Say what loads them: forklift, pallet jack, loader, ramp, or only people. Reels over 42 inches weigh more than 100 lb empty.
- Say how often: one time, weekly, monthly or at each job close-out.
- Buying instead? Give the flange and height you want, how many, and how the reel gets from the truck to where it will sit.
- No form handy? Email info@dcwoodenspools.com with the same details and a few photos.
Reels you are likely to have
| Reel | Build | Flange | Traverse | Drum | Lb | Usually carries |
|---|---|---|---|---|---|---|
| C-5 | Nailed wood | 23 | 17 | 12 | 34 | Copper building wire, grounding |
| A-10 | Nailed wood | 30 | 22 | 16 | 66 | Service drop, bare aluminium |
| N-24 | Nailed wood | 36 | 28 | 14 | 83 | Insulated and multiplex cable |
| A-29 | Nailed wood | 42 | 28 | 21 | 154 | Overhead conductor, feeders |
| A-38 | Nailed wood | 48 | 28 | 24 | 212 | Aluminium and ACSR, large feeders |
| A-62 | Nailed wood | 60 | 28 | 28 | 397 | Utility conductor |
| A-76 | Nailed wood | 66 | 28 | 30 | 473 | Heavy conductor |
| S-120 | Steel, returnable | 84 | 36 | 42 | 895 | Transmission and medium voltage |
Other makers' reels differ by an inch or two. All flange sizes · How to measure
Questions the desk gets
Does the desk take reels from lab construction?
Yes. Labs leave everything from small building wire reels to 48 and 60 inch feeder reels.
Can the desk follow a federal site's access rules?
Yes. Tell the desk the gate, badging and escort requirements with the request.
Sources
Each opened and read on 9 November 2026.
- Comptroller of Maryland, Impact of the Federal Government on Maryland's Economy (June 2025): $46 billion in federal contracts for work in Maryland in fiscal 2024; Defense and HHS 60%; third per capita
- Maryland Office of People's Counsel, Your Local Electricity Companies: which utility serves which Maryland counties