Expose as Variables
Controls which computed fields the Glass Selection import popup (Unitized System Library — Costing / Cost Explorer) offers as Maths-formula variables
Glass Catalogue
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Cost Formula (IGU)
Cost/m² = inner_t × coated_price + inner_t × treatment_cost
+ air_gap × air_gap_rate + outer_t × clear_glass_rate
Each group has its own Clear Glass / Air Gap / Heat Strengthening / Toughening rates — edit them from that group's Pricing Constants panel above.