EBSK Security Night Vent Keep SKU: EBSK-SEC-SV Pinit Quantity discounts available QuantityPrice Quantity -+ Add to Basket DescriptionExtended security night vent mushroom keep for use with mushroom espagnolette bolts.Holds window secure in either the shut or night vent position.Includes additional fixing points for enhanced security.DocumentationTechnical DWG Drawing: DownloadTechnical PDF Drawing: Download