EBAK 6mm Night Vent Keep SKU: EBAK-SV Pinit Quantity discounts available QuantityPrice Quantity -+ Add to Basket DescriptionA 6mm security night vent mushroom keep for use with mushroom espagnolette bolts.No back on these keeps make it a slimmer profile for use with lower stack height windows.Holds window secure in either the shut or night vent position.Note these keeps should not be used with the MACO TRICOAT espagnolette bolts.DocumentationTechnical DWG Drawing: DownloadTechnical PDF Drawing: Download