exterior door jamb 1)very thin gesso 2) MC: 8-12% 3)stable 4)manufacturer exterior door jamb1) Advanced technical; 2) Strong control on quality; 3) For construction decoration use. Detailed Product Descriptionexterior door jamb is made of wood with thin gesso and water paint coat.It's use for the door and decorate.1.Wood variety:chinese fir or pine,gum LVL2.Surface:thin gesso and water paint3. ...