MasterFormat and the CSI divisions
MasterFormat is a standard way of organizing a construction specification into numbered sections, maintained by the Construction Specifications Institute (CSI) and CSC in Canada. It splits the work of a building into divisions, each one a broad category of material or trade. Concrete, masonry, metals, finishes, mechanical and electrical all have their own divisions, which lets everyone on a project find the same scope in the same place.
The divisions give the industry a shared filing system. When an architect writes a spec, a section number tells an estimator exactly what trade a requirement belongs to, and it tells a general contractor which subcontractor or supplier owns that scope. Division 08 is the openings division, and its sections are where you find everything about the holes in the walls and what fills them.
What Division 08 covers
Division 08, titled Openings, groups the products that create and close an opening in a wall. It runs from the structural frame of the opening through the door or window that fills it to the hardware that operates and secures it. In practice that is a wide and varied scope, which is part of why it is treated as its own trade.
- Doors and frames: hollow metal (steel), wood, and the frames they hang in
- Specialty doors: coiling, sliding, folding, access panels and similar
- Entrances and storefront: aluminum-framed entrances and glazed curtain wall
- Windows: fixed and operable window units
- Hardware: hinges, locks, closers, exit devices, trim, stops and the rest
- Glazing: the glass and the systems that hold it
- Louvers and vents: fixed openings for air movement
Who works in Division 08
The core of the trade is the door-and-hardware distributor, the company that takes a set of drawings and a spec and supplies the doors, frames and hardware for the whole job. Around that sit estimators, who price the work from the plans, and project managers, who track submittals, orders and deliveries once the job is won.
The specialist role is the hardware consultant, often an Architectural Hardware Consultant (AHC), who reads the spec and writes the hardware schedule that says exactly what goes on every opening. Installers and finish carpenters hang the doors and fit the hardware in the field. All of them are reading from the same Division 08 documents.
Division 08 next to Division 10
Division 08 is often confused with Division 10, Specialties. The line is usually about function. Division 08 is the operating, load-bearing opening itself: the door, the frame, the glass, the hardware that lets people through and keeps the opening secure or fire-rated. Division 10 is the fit-out items attached to the building, such as toilet partitions, lockers, signage and fire extinguisher cabinets.
A rule of thumb: if it is the opening and how it works, it is Division 08; if it is an accessory mounted in or on the finished space, it is more likely Division 10. Knowing which division a product falls under tells you whose scope it is and who is responsible for pricing and supplying it.
Why Division 08 needs its own software
A single commercial job can carry hundreds of openings, each with its own door, frame and a hardware set made up of a dozen or more individual items, all of which have to be priced, scheduled, submitted and ordered correctly. The combinations are specific to this trade, and spreadsheets and generic estimating tools struggle with that structure.
eMullion is a CPQ and project-management platform built specifically for Division 08 distributors, so the way it models openings, hardware sets and schedules matches how the trade actually works.
