Price last checked Nov 8, 2026. It may have changed, so confirm on the store's page. We earn a commission on purchases (details).
BESTGUARD tube-type door closer helps return a compatible hinged door toward the closed position. Variants: F6311, with no size provided, and F6312B, listed at 1-1/4 x 9 inches. The cylinder body is aluminum alloy; other fittings are zinc-plated iron, with an electrophoretic surface finish. Use only where a tube-style closing mechanism matches the door and frame. Before ordering, confirm the variant, door type, opening direction, door and frame dimensions, mounting points, color, package contents, and exact F6311 size. No door-weight rating, closing-force adjustment, hold-open function, mounting screws, or fire-door certification is supplied; do not assume these features. Install on a structurally sound door and frame using suitable fasteners. Test the closing action, keep fingers clear of moving joints, and do not use where fire or accessibility rules require certified hardware unless compliance is independently verified.