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Expandable Dual Window

255mm / JBF-255R

The height of the tucking jaw is important, minimizing inflow of rainwater and having a structural stability.

※ central crime prevention function installation is possible.

※ Handle is optional.

Auto Lock
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Choice Handle(Large) JS-HC01 Choice Handle(Middle) JS-HC02
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Energy effaceiency confermation - BF-255

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Expandable Dual Window 255mm
Application Window for external balcony
Recommended size Width 4200 * Height 2400
Glass application 5-24mm
Main material application JBF-255R / JSF-135B, 120B, 115B, 115BN / MC-135B, 120B, 115B, 115BN / GB-5, 91P, 16P, 24P, 26P / MF-115B
window JSF-135B(24mm 페어)
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frame JBF-255R
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• Colors of catalogs are image cuts for easy understanding, and may differ slightly from actual product.

• For optimum performance, please follow the standard specifications. Do not lean against the door or push hard. The glass may break.

• Do not let the hot air or heat of the heating appliance touch the door directly. It may cause deformation or fire.

• Please be careful about the safety of the children because the window and screen screen may fall when you lean or shock.

• Design or molding is subject to change without notice.

• When using outside window, A / S is excluded.


• The warranty period is within one year from the date of purchase only in case of defective manufacturing, and all additional A / S will be charged.

• Please note that you may be charged for actual costs (manufacturing costs, travel expenses, etc.) at the time of receipt after A / S period (about 1 year). However, we will notify you that the actual expenses will be charged even if there is less than 1 year of A / S due to installation defect (installation of door frame anchor, mounting hinge, cylinder ota ball, etc.).

• Consumable parts (interlocking car, mohair, etc.) can be purchased from us.