Start with an opening reference
Assign a reference to every door type or opening. Include the building area, number of leaves, material, handing and quantity. A schedule should make it possible to connect a quotation line back to an actual opening rather than a generic room count.
Record the physical conditions
Give leaf width, height, thickness and approximate weight. Add the frame profile and available mounting space. For glass doors, include glass thickness, layout and preparation drawings. Existing openings need photographs and measured fixing details.
Define functions separately
List the closing, locking, exit and outside access requirements. Keep the lock function separate from the handle appearance. Where different room types require different operation, use separate schedule rows even if their handles look alike.
List the complete hardware set
For each opening, list hinges or pivots, closer or floor spring, lock, cylinder, keys, handles, exit device where required, stops, bolts and relevant glass fittings. Identify which components are already supplied by another trade.
State appearance and documents
Use a finish reference for visible parts. If the project specifies test reports or certificates, record the requirement and request evidence for the exact offered item. A brand-level brochure does not establish the status of every configuration.
Compare offers on the same basis
Use the same schedule revision for all inquiries. Ask suppliers to identify substitutions, exclusions, set contents and missing information. Compare quantities, unit definitions, packing, sample scope and delivery terms before judging totals.