Whitco Flush Bolts Zinc diecast steel insert flush bolts for aluminium door applications. Features of the Flush Bolts Suitable for left or right hand closing doors Concealed fixing and operation when edge mounted Easy to use slide operation Smooth action Specification Available in Trade Pack Only. Dimensions Close Downloads Whitco General Door Hardware Catalogue.pdf (.pdf, 525 kB) Close Ordering Trade Pack Description Part Number Barcode 150mm, 20mm Throw, Black W203817 9311847486294 Close Related Products Whitco Double Cylinder DeadboltHigh security rimlock. Whitco CYL4 Patio BoltConcealed fixing for security and style. Whitco Bow Series LeverDoor furniture lockset.