Hi Chris,
Thanks for using Syncfusion products.
We can use the property DefaultLineSize for set the default row height. Use the below code,
grid.Model.RowHeights.DefaultLineSize = 50d;
Please download the sample from the below location.
http://www.syncfusion.com/uploads/redirect.aspx?file=RowHeight_56d95924.zip&team=developmentLet us know if you have any other questions.
With Regards,
Dhinesh Pandiyan