Lister's is the first WHS Halo customer to manufacture its new integral or run-through sash horn windows. Available in either Elitis Linear or Elitis Sculptor frames, the window operates as a simple top-opening push-out casement sash, but looks like a more traditional sliding sash window. The sash horn feature is a continuation of the casement sash frame, not a screwed or stuck-on sash moulding. It is strong, secure, weathertight, draught-free and it doesn't rattle.
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