Naming the limit before anyone asks
Every warehouse eventually asks about high-level dust, usually before an audit or a client visit. A proposal that has already stated the limit turns that into a straightforward referral. A proposal that is silent on it turns the same conversation into a disappointment, because the site reasonably assumed a warehouse cleaning contractor cleaned the warehouse. The referral is also easier to make when it has been anticipated rather than requested.
The wording that works avoids figures and describes the principle: cleaning is carried out from floor level using appropriate tools, and anything requiring a platform, lift or harness is excluded. That covers beams, reserve pallets, pipework, light fittings, ductwork and structural steel without needing to list them or invent a height that varies from building to building. It also holds for a building whose racking is later extended.
