Is the contractor permitted to submit substitutions or propose comparable products? Not if the spec is closed, he is not. Be careful if you think you know, just from reading a technical section of the specifications. The manufacturer and product..
This month the CSI Specifying Practice Group discussed the results of a group survey about product submittals. The intent was to learn how the group processed contractor submittals for products that are not specified by name.
A surprising dichotomy: Architects say approval of products that are not specified should be documented as contract modifications, but most simply note acceptance on the submittal or the substitution request form. A simple acceptance method is preferred..