Product Description & Features Closer ONLY, No Parts Included Medium spring tensions available Only. Two speed control Valves: Closing and Latching speeds controlled by separate regulating valves, fully adjustable after installation. Fits in an aluminum header or transom bar as small as 1-3/4" x 4". Positve centering for alignment and to hold door closed against any normal wind or draft. Stable hydraulic door check fluid for any climatic operation and constant lubrication.
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