4000mm Outward Opening Bi-Fold Aluminium Threshold Cill - Black Finish SKU: SF94T-4000-BK Available to OrderOut of Stock Pinit Quantity discounts available QuantityPrice Quantity -+ Add to Basket DescriptionA 4000mm aluminium threshold finished in black manufactured for use with the open-out Securefold Pro (CoFold100) non-mortice and mortice folding door system.This unit replaces the traditional cill and has the benefits of incorporating the slide channels and is rot-free with a large drainage chamber that is pre-drilled every 300mm for ease of installation.The threshold is designed in such a way that the inner cill extends right under the timber tread and sash rebate, giving extra strength and stability, without taking away from the traditional timber look from the inside.Includes a Polypropylene Bottom Channel.Jamb kits are also available as separate items.Note: Used for outward opening door configurations only. SpecificationsMaterial:AluminiumDesign:For use on open out doors onlyDocumentationTechnical DWG Drawing: DownloadTechnical PDF Drawing: Download