Automatic drop down door bottom seals (hidden installation)

Technical Specifications Main Function: Sealing the bottom of aluminum doors for dustproofing, thermal insulation, and soundproofing. Applicable Doors: Aluminum, thermal break aluminum, PVC, wooden, and metal doors. Body Material: Extruded aluminum profile. Seal Strip: Black PVC seal strip. Installation: Mounted in a pre-cut slot at the bottom of the door; fixed with self-adhesive tape or screws. Adjustment: Single-point bolt adjustment; achieves immediate dropping at the hinge side followed by gradual sealing along the full length. Seal Gap (Stroke): 3 mm – 15 mm (maximum drop height: 13 mm). Custom Length: 300 mm – 1100 mm (cuttable range: 50 mm – 150 mm). Sound Insulation: 34 dB – 43 dB.