Category: Tools & Home Improvement Vendor: 105 Degree - No-Hold Open "A" Type Adjustable End Loading Top Arm Assembly 1" Depth Top Rail Suitable for Exterior Doors from ( Product Description : International Series 230 Concealed Overhead Door Closer - 231A - 105 Degree built-in positive backstop with (NHO) No Hold-Open function - With Standard Medium spring tension for use on Exterior Doors with center pivoted applications. "A" Type adjustable End Loading Top Arm Assembly (1" depth top rail) -- Center Hung Doors: Double or Single Acting (Door Stop applied to frame renders unit Single Acting) - Suitable for Interior Doors from (31" to 41" x 96") - Two speed control Valves: Closing and Latching speeds controlled by separate regulating valves, fully adjustable after installation. Fits an aluminum header or transom bar as small as 1 ?" x 4" - Positive 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 -- Limited 5 Year Warranty -- (UL) Listed units without built-in hold-open.
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