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  • Dorma BTS75V Size 1-4 Floor Spring

    Dorma BTS75V Size 1-4 Floor Spring

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    These Dorma BTS75 Floor Springs have an adjustable strength size 1-4 and can be used on a single or double action door when fitted in conjunction with correct accessory pack. rn These floor springs are available with or without 90 degree hold open, can be used on doors with a maximum weight of 120kg and…

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  • Dorma BTS80 Size 4 Floor Spring

    Dorma BTS80 Size 4 Floor Spring

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    These Dorma BTS80 Floor Springs have a fixed strength size 4 and can be used on a single or double action door when fitted in conjunction with correct accessory pack. These floor springs can be used on doors with a maximum weight of 300kg and a maximum width of 1100mm, are tested to BS EN1154…

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