This item was in the wheelhouse of a fishing boat. It is a push-up (opening/closing) window (sash). Please check the size, shape, condition, etc., in the images. Stainless steel bolts and nuts (6mm) for installation are included as a bonus. As described, this is a used item, so we cannot provide a warranty. Please prioritize the current condition (not covered by warranty). Returns and claims are not accepted. (Please understand) We cannot provide support for use or installation. If you have any questions, please ask or inspect the item in person.