# Manufacturer or Product Substitution in Division 27 Communications submittals

> Source: https://deviationcheck.com/divisions/27-communications/manufacturer-substitution/

The submittal proposes a different manufacturer or product than the spec names, without an approved or-equal or substitution request.

## What to look for in Division 27 Communications

Communications specs frequently name manufacturers with specific product lines for warranty and performance assurance. Mixed-manufacturer cabling systems void warranty coverage from most vendors. Look for:
- Structured cabling system manufacturer substitutions (CommScope/Systimax, Panduit, Corning, Belden, Leviton, Hubbell) - most specs require a single-manufacturer end-to-end warranty
- Rack and cabinet manufacturer substitutions (Chatsworth/CPI, Great Lakes, Panduit)
- Fiber optic cable and connector manufacturer mismatches (Corning, CommScope, Panduit)
- Wireless access point manufacturer substitutions (Cisco/Meraki, Aruba/HPE, Ruckus/CommScope)
- DAS equipment manufacturer substitutions (Corning, CommScope, JMA Wireless, Galtronics)
- AV equipment manufacturer substitutions (Crestron, Extron, Biamp, QSC)
- Paging/intercom system manufacturer substitutions (AtlasIED, Bogen, TOA)

## Severity

Default grade: Blocker. Drops to a Note if the submittal attaches an or-equal approval letter from the architect of record.