Making it easier to convert your older system to a new radio-intercom. To make replacing your system simplier, NuTone makes several "updating" frames that fit over and cover the larger opening left by an older system. You can install the latest system without needing to patch walls. Rough-ins are purchased separately when required.
IA-119 - Mounts over and covers opening of older 'Master' station. Use with IM-3204 or IMA-3303 'Master' stations. Features plastic construction. IA-51 - Allows you to adapt the opening from your older horizontal speakers to work with current IS-325, ISA-335 and ISA-445 5" speakers. Surface mounts over old speaker opening. Features plastic construction. IA-55 - Adapts older horizontal speaker areas to work with current IS-325, ISA-335 and ISA-445 5" speakers. Recess mounts into old speaker opening (requires increasing the opening above and below the old speaker opening). Features plastic construction. IA-83 - Adapt the openings from your older speakers to work with current ISA-338 and ISA-448 8" speakers. Frame recess mounts into old speaker opening. Features wood construction.
UPDATE AND DESKTOP/SURFACE FRAMES Model Use With Updates   W x H In-Wall Depth Projects Rough-In IA-119 IM-3204 IMA-3303 Older 3-wire (IM-3204 req. 4 wire cable) Master stations except 2015/16* & 2011/12 17" x 9-3/4" 3/16" 3/16" IR-103 or IR-104 IA-51 IMA-3303 IM-3204 IMA-4406 5" horizontal speakers from older systems to IS-325, ISA-335 or ISA-445 (IM-3204 requires 4 wire cable) 9-3/8" x 8-5/8" 2-1/4" - IA-55 IMA-3303 IM-3204 IMA-4406 5" horizontal speakers from older systems to IS-325, ISA-335 or ISA-445 (IM-3204 requires 4 wire cable) 9-1/2" x 9" 3/16" IR-50 IA-83 IMA-3303 IMA-4406 Larger speakers from older systems to more compact ISA-338 or ISA-448 12-1/4" x 13-1/2" 3/4" IR-50 *Updating frames for models 2015/16 and 2011/12 are not available. Note: No Master or speaker update frame is needed to update the IMA-3303 to the IMA-3303 system.