HID® ProxCard II (1326) Compatible Cards & Fobs
The classic thick clamshell proximity card — the 1326 style — durable, non-printable, slot-punched for a strap, and typically programmed in 26-bit H10301. The badge most people picture when they hear "prox card."
Does American Key Cards make HID ProxCard II (1326) compatible cards?
Yes — American Key Cards supplies unbranded HID ProxCard II (1326) compatible cards and key fobs (AKC 1326-Style Compatible Clamshell Card), encoded to your facility code and card-number range and ready to use on your existing HID readers. No hardware changes and no dealer account required.
- 125 kHz
- Frequency
- 125 kHz prox
- Technology
- 6
- Bit formats
- 2+
- OEM part nos.
- American Key Cards
- Order from
The clamshell card earned its decades of service by being nearly indestructible: a rigid two-piece shell around the coil and transponder, thicker than an ISO card, with a punch slot for a badge strap. It cannot go through a card printer — facilities that need printed photo IDs use the ISO-thickness card style instead — but for warehouses, industrial sites, parking, and any environment where badges take abuse, the clamshell remains the practical choice. Ours is an unbranded, compatible-by-specification clamshell programmed to whatever your system runs: 26-bit H10301 most commonly, the 37-bit layouts, or another Wiegand format your panel was commissioned with. Same thickness class, same slot punch, same read behavior on your existing 125 kHz readers — programmed to your facility code and number range and verified before shipping.
HID ProxCard II (1326) specifications
- System brand
- HID Global / ASSA ABLOY
- Technology
- 125 kHz Passive Proximity
- Frequency
- 125 kHz
- Credential platform
- 125 kHz low-frequency proximity platform (HID Prox line)
- Bit formats
- 26-bit H10301 (most common), 37-bit H10302, 37-bit H10304, 35-bit Corporate 1000, 48-bit Corporate 1000, Custom formats up to 85 bits
- OEM part numbers
- 1326, 1526
Specifications reviewed August 2026
Our compatible HID ProxCard II (1326) credentials
American Key Cards manufactures unbranded credentials engineered to work with your existing HID readers — no hardware changes, encoded to your facility code and card-number range before they ship.
Full specifications, form factors and ordering FAQ: Standard 125 kHz proximity cards
American Key Cards is an independent manufacturer of unbranded, compatible-by-specification credentials. We are not affiliated with, endorsed by, or sponsored by HID, and we never supply OEM-branded product — for brand-original credentials, order from HID or an authorized dealer. Brand names appear only to identify compatibility, and all trademarks remain the property of their respective owners.
Where HID ProxCard II (1326) is used
- Facilities that prefer a durable, thick badge without photo-ID printing
- Industrial and warehouse environments
- Sites where card printers are not used
- Legacy installations originally issued clamshell proximity cards
Works with these readers
Related formats
You might also need
HID Prox H10301 (Standard 26-Bit)
The most widely deployed proximity format in North America: 26-bit Wiegand — an 8-bit facility code plus 16-bit card number — on the 125 kHz HID Prox platform, live on millions of doors.
View compatible cardsHID ISOProx II (1386)
The printable ISO-thickness proximity card — the 1386 style — that made one badge do two jobs: photo ID on the surface, 125 kHz access credential inside. The default body for corporate badge programs.
View compatible cardsHID ProxKey III Key Fob (1346)
The teardrop keyring fob of the 125 kHz Prox world — battery-free, weather-resistant, and programmed in the same formats as the cards on your system. The 1346 style is what most tenants mean by "the fob."
View compatible cardsHID ProxCard II (1326) — FAQ
What is a 1326-style clamshell card?
A thick, rigid proximity card built as a sealed two-piece shell with an external slot punch. The 1326 part number became shorthand for the whole clamshell category; the credential inside is the standard 125 kHz proximity platform programmed in your system's format.
Can a clamshell card be printed in a card printer?
No — it is too thick for direct-to-card printers, by design. If you need printed photo badges, order the ISO-thickness printable card style in the same format instead; many facilities issue clamshells for general staff and printable ISO cards for photo-ID roles on the same system.
Are your compatible clamshells the same thickness as the original style?
They are built to the standard clamshell thickness class with the same slot punch position, so they fit existing badge straps and holders. Read behavior on your readers is equivalent because the credential presents the same programmed data over the same air interface.
Which formats can you program a clamshell in?
The common Wiegand layouts your panel might run — 26-bit H10301, 37-bit H10302/H10304, and other standard structures. Send your facility code and number range, or photos of a working card, and we confirm the exact format before production.