Revit Window Family Blocks - IRC R310 Egress Window Library, 13 Dimensioned Blocks (DXF, mm)

Thirteen window blocks drawn at true US call sizes in millimetres - six elevations, two wall plans, a casement plan with a 90 degree swing, a sill-height section and an IRC R310 net clear opening gauge - each one carrying its code figure as text on the drawing. At 20 minutes of drafting per block that is 4 hours 20 minutes of board time you do not repeat on the next job.