Briton 5420 Eurosash is based on the dimensional requirements of DIN18251. EN 12209. Included in a successful time test to EN 1634, CE marked. Sashlock has a cylinder to latch function where both latch and deadbolt can be withdrawn by cylinder or thumb turn. The lock can be operated by lever handles to withdraw the latchbolt. The deadbolt can be thrown and withdrawn from one or both sides as required depending on the cylinder selected. Euro Profile Cylinder Sashcase. Cylinders sold separately. Pierced to accept bolt through fixings. Quick reversible latch for left and right hand applications allowing quick and trouble free on-site handing without the need to dismantle the lockcase. 5 year guarantee.