Hi Matthew,

Thank you for contacting Mearto with your appraisal inquiry, and thanks for the dimensions.
Based on the photos and information provided, and subject to examination, this is:

An Arts and Crafts style stained glass panel
American, mid 20th Century
In a white-painted frame with lead mullions and stylized geometric patterns
34 by 39 inches
CONDITION: appears to be in good condition
PROVENANCE: installed in a window box
$300-500*
*represents a fair-market value for auction purposes; retail or asking price may vary.

Please let us know if you have additional items to appraise, and thank you again for using Mearto.