Installing SBS can further assure that window is securely closed.

Has done proof load test in accordance with the requirements of Hong Kong Building Department and with satisfactory results.

NBSF NBSS

Product Code Product Description Catalogue
NBSF Wedge for Frame
NBSS Wedge for Sash
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Installation guideline

Nylon

Proof load test report is available upon request.

None

– – It is important that the two SBSs are installed in correct direction and position. (Please refer to “Installation guideline”)
– Do not use strong detergent (i.e. Blench / Alcohol) or erosive penetrant for cleaning purposes.