Lift-and-Lock Action for Perimeter Compression
Turning the হ্যান্ডেল lowers the পাল্লা and engages the multipoint লকing system, compressing the perimeter gaskets. This supports the air, water, acoustic and wind-load performance of the completed দরজা assembly. Final performance depends on the প্রোফাইল, সিলিং configuration and verified test results.