“Double glazing” is too broad a description for a technical submission. A useful glass schedule identifies the actual layers and the performance required at each location.
Use a consistent notation
State the glass types and thicknesses, cavity arrangement, coatings and their surfaces, and any laminate construction. Include processing requirements and distinguish vision areas from opaque or protected locations. The project team can then compare like with like.
Keep the properties together
Request solar and light-transmission results for the proposed combination, rather than combining figures taken from different catalogue examples. Changes to the inner pane or another part of the build-up can change the reported properties.
Try a simple procurement check: give two suppliers the same schedule and ask each to mark any proposed deviation. Review those deviations before accepting the quotation. A substitute may affect appearance, energy performance, safety or availability. Keep the accepted configuration and its supporting information with the final drawings so that purchasing, manufacture and later replacement refer to the same assembly.
Reference and further reading
Pilkington: Double glazing units g-value guide.
General educational guidance. Use current local requirements, product-specific evidence and competent project assessment for design and construction decisions.