Inner filling material: Kraft honeycomb (Kadoma brand) lock and hinge support wedges are available.
Case: It is a 36mm*0.20mm PVC coated case consisting of 2 laminated and combined 18mm MDF.
Sill: 8mm*8cm (Dimensions may vary) MDF molding net ear is 3.5cm and 0.20mm PVC coating.
Wing: 6mm MDF, wing thickness 42mm, 0.20mm PVC coating.
Serens: 45mm*35mm thickness, dried fir and double spars are used under the door.