The glass in previous windows might be the extremely early 'plate' or 'broad' glass to 'crown' or 'cylinder'.[five] Previous glass is recognised by its imperfections ('ream') which bring about optical distortion. B – sash cord. Each sash is linked to a sash twine that's connected for the facet from the sash and https://rylanncipz.bloguetechno.com/getting-my-sash-window-draught-proofing-to-work-70948041