A combination seal to improve the performance of inward opening doors with a water bar in the sill but can also be used as a very effective acoustic door seal. It forms the basis of acoustic seals installed by the BBC in its recording studio and auditoria doors.

Thunder seals are available in two sizes with the same overall shape. Where an external door is to be sealed a larger section combination is recommended eg TLS/WGS. The smaller section combinations eg. TNG/WHG are more suited to internal applications.

For acoustic sealing applications the Thunder weather bar sections may be reversed so that only a flat aluminium kick plate is visible and doors can be more easily wedged open. For such applications the low rise 3mm threshold plate (section TM) is suitable.

e.g Sealmaster Thunder seal TLS/WGS to suit door in .......mm wide opening. Threshold to be bedded in silicone and fixed to floor with screws/plugs. Weatherboard (reversed if required) to be fixed to door with screws (rebate door if reversed).

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