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Thermlock PVC window reinforcement
Sheerframe systems company L.B. plastics has patented a unique reinforcing system - Thermlock® - which provides greater strength, better window security and better thermal performance than traditional reinforcing.
Thermlock FP is part of the fully reinforced zero carbon window construction.
More secure windows - up to 20%
- screw pick up ridges make fixing easier. Thermlock delivers 20% greater pull-out strength on handles, keeps, shootbolts and hinge fixings.
Fabricator-friendly
- warm and clean to the touch, Thermlock is more pleasant and safer to work with than steel or aluminium. Manufacturing processes are quieter and quicker than standard methods.


