We manufacture these slide through brackets in various sizes, 4"x4", ( 100x100mm ), 4"x3" ( 100x75mm ), 4"x2" ( 100x50mm ) and 3"x3" ( 75x75mm) as well as a 3"x3" ( 75x75mm ) drop in version. These are 4"x3" ( 100 x 75mm ) Slide In Barricade Brackets with fixings.
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