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__________ is the middle horizontal member of the shutter where the locking arrangement is provided.

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__________ is the middle horizontal member of the shutter where the locking arrangement is provided.

(a) Lock rail

(b) Cross rail

(c) Top rail

(d) Bottom rail

I got this question in class test.

I'd like to ask this question from Types of Doors topic in chapter Doors, Windows and Ventilators of Construction & Building Materials

1 Answer

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The correct answer is (a) Lock rail

To explain I would say: The additional horizontal rails fixed between the top and bottom rails of a shutter are known as the intermediate or cross rails. A rail which is fixed between the top rail and cross trail is called as Frieze rail.

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