Multistack LLC
Multistack LLC is a small business in Sparta, WI registered on SAM.gov to bid on federal contracts. It has won about $162,089 in federal prime contracts since fiscal year 2024, according to USAspending.gov.
- UEI
- GYLDKFE322G5
- CAGE code
- 3E4Y1
- SAM.gov registration
- Active
Registration details
| Legal business name | Multistack LLC |
|---|---|
| Unique Entity ID (UEI) | GYLDKFE322G5 |
| CAGE code | 3E4Y1 |
| Location | Sparta, WI |
| SAM.gov registration | Active through Feb 13, 2027 |
| Business started | 2002 |
| Primary NAICS code | 333415: Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing |
| Website | www.multistack.com |
Federal contract history
| Fiscal year | Prime contract obligations |
|---|---|
| FY2023 | $866,939 |
| FY2024 | $1.3 million |
| FY2025 | $1.2 million |
| FY2026 | $1.1 million |
Its biggest federal customers over the last four fiscal years: Department of State ($4.6 million).
Recent contract awards
| Awarded | Agency | What it's for | Amount |
|---|---|---|---|
| Sep 30, 2026 | Department of State | Fac 26-159/165 critical spares for multistack chillers, nox1 | $16,740 |
| Sep 26, 2026 | Department of State | Lag: fac-renew pm service contract for cob chillers-7901srvc | $23,103 |
| Sep 23, 2026 | Department of State | Fac-7901 srvc- pmsc for nec chancery chillers | $94,765 |
| Sep 11, 2026 | Department of State | Fac/7901r/fwp826/cha/mpr ac unit repair parts and service | $30,171 |
| Aug 18, 2026 | Department of State | Fac - pmsc dedicated heat recovery nec | $20,838 |
| Jul 30, 2026 | Department of State | Chiller components: control board, smart key controller and 8gb memory flash drive | $993 |
Figures are prime contract obligations reported to USAspending.gov. Work done as a subcontractor isn't included.
NAICS codes Multistack LLC is small under
On its SAM.gov registration, Multistack LLC meets the SBA size standard for these industries, so it can bid on small business set-asides that use them.
Open contracts in Multistack LLC's NAICS codes
17 open federal opportunities on SAM.gov use a NAICS code Multistack LLC is small under. These are due soonest.
- Modular Integrated Terminals (MIT)
Due in 3 daysOct 13, 2026
- Serv C26-134 Daily Freezer Replacement (Lay Up Room)
✦ The Air Force at Tinker AFB, Oklahoma is doing market research (a Sources Sought, not a bid request) for a one-year service contract to replace the refrigeration systems on two…
Due in 3 daysOct 13, 2026
- Environmental Control System (ECS)
✦ The Army (Letterkenny Army Depot, Pennsylvania) is doing market research to find sources for Environmental Control Systems (part number 13645428-1) for the AN/TPY-2 radar's…
Due in 3 daysOct 13, 2026
- COOLING COIL,AIR,DUCT
Due in 4 daysOct 14, 2026
- Compressor Units and Spares
✦ NSWC Indian Head Division (Navy) is running a sources sought survey for Trane OEM compressor units and spare parts to directly replace parts in its existing HVAC systems.
Due in 4 daysOct 14, 2026
Similar small businesses
Other small businesses with the same primary NAICS code (333415) that have won federal contracts, starting with Wisconsin:
- Surfacide, LLC, Waukesha, WI
- Geneva Scientific, LLC, Williams Bay, WI
- Sterling Products Inc, New Berlin, WI
- Aldevra LLC, Kalamazoo, MI
- Eoi Inc, Lewis Center, OH
- Venturedyne LTD, Holland, MI
Frequently asked questions
What is Multistack LLC's CAGE code?
Multistack LLC's CAGE code is 3E4Y1. The Defense Logistics Agency assigns CAGE codes when a business registers on SAM.gov.
What is Multistack LLC's UEI?
Multistack LLC's Unique Entity ID (UEI) is GYLDKFE322G5. SAM.gov assigns the UEI, and it identifies the business across the federal government.
Is Multistack LLC's SAM.gov registration active?
Yes, as of the latest SAM.gov public data, Multistack LLC's registration is active through feb 13, 2027. Registrations are renewed every year.
Is Multistack LLC a small business?
Multistack LLC is registered on SAM.gov as small under 2 NAICS codes, including its primary code, 333415. Size is set per NAICS code, so a business can be small for some contracts and not others.
Keep going
- Look up another business's CAGE code or UEI
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Registration details come from SAM.gov's public entity extract and contract figures from USAspending.gov. Contact names and street addresses are left out. To change these details, update the registration on SAM.gov. To ask us to remove this page, email hello@fedready.us.