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Overall frame size = clear opening + 147 mm. e. g. 600 mm clear opening = 747 mm overall frame width.
trapdoors type flap made of stainless steel series HSE 75 line Premium-Line performance up to 5t description weight A HSE 75 series access hatch when filled and installed correctly will require a maximum forece of 20 kg to open. material stainless steel Fire Protection Fire-Rated trapdoor thickness 75 assisted opening assisted lift spring option Double Seal. Under side release hatch. spezification cars and easy vans, hard floor covering, single flap and access panel fillable hard flooring variants trapdoor access panel, single flap
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