FAQ: Which fans are compatible with the NA-IS1-12 inlet spacers?

The NA-IS1-12 inlet spacers are compatible with the following Noctua fans:

NF-A12x25 PWM chromax.black.swap
NF-A12x25 PWM
NF-A12x25 LS-PWM
NF-A12x25 FLX
NF-A12x25 ULN
NF-F12 PWM chromax.black.swap
NF-F12 PWM
NF-F12 industrialPPC-2000 IP67 PWM
NF-F12 industrialPPC-2000 PWM
NF-F12 industrialPPC-2000
NF-F12 industrialPPC-24V-2000 IP67 PWM
NF-F12 industrialPPC-24V-3000 IP67 PWM
NF-F12 industrialPPC-3000 PWM
NF-P12 redux-1700 PWM
NF-P12 redux-1300 PWM
NF-P12 redux-1300
NF-P12 redux-900
NF-S12A FLX
NF-S12A PWM chromax.black.swap
NF-S12A PWM
NF-S12A ULN
NF-S12B redux-1200 PWM (since 2018)
NF-S12B redux-1200 (since 2018)
NF-S12B redux-700 (since 2018)

Please note that the NA-IS1-12 cannot be used with other fans and are not compatible with third-party fans.