Meranti & Top Notch Products Door Jambs Meranti & TopNotch Meranti Meranti Front Entrance (Door Jambs) TopNotchTM Name: Door Jambs Un-Notched Model: 185x40 DR Name: Door Jambs TopNotched Model: 138x40 DR Name: Harwood Splayed Sill Door Jamb(KASAI) Model: Harwood Sill for 138mm