high-quality, silver door closer kit. rectangular , cylindrical body, base plate.

house construction machine machinery mechanism automatic door closer rectangular design cylindrical body base plate internal components gears springs piston adjustable closing speed backcheck reliable efficient commercial buildings residential control hardware convenience building automation accessibility aluminum architecture closure compact device doorcloser doorstopper doorway durable equipment hinge holder hydraulic isolated kit retractable safety security silver steel system technology components: piston backcheck solution doors