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Truth support arms must be used with vent “balancing” style hinges. The bottom bracket of the support arm must be mounted as low on the window frame as possible to minimize loading. The open support arm angle must be greater than 35 degrees. Friction adjustment screws help control the free motion of the vent. Vent must be securely locked when left in the closed position.
Ships within 48 hours · Estimated delivery Jun 21 - Jun 26
US$40
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