Yale A300 OP Series Hydraulic Door Closer The Yale A300 OP Series provides a full range of economy surface mounted door closers which covers a wide range of applications. Three Power sizes to suit most push side applications where economy and ease of installation is required. Specification Power SizesCloser fixed power size range of 2, 3, 4. MaterialsHigh purity die-cast aluminium body. Heat treated steel rack and pinion. Stable hydraulic oil for consistent climatic operation and constant lubrication. Forged steel arms passivated againstcorrosion. MechanismRack and pinion design. HandingNon-handed. Suitable for left or right hand doors. AdjustmentIndependent valves control closing and latching speeds. Closing speed 180° - 10°.Latching speed 10° - 0°. Offset Parallel ArmSuits up to 13mm door stop. FinishSilver Baked Enamel - SIL Dimensions Close Documents | Downloads Yale Door Control Catalogue.pdf (.pdf, 442 kB) Close Ordering Trade Pack Description Part Number Size 2 Offset Parallel Arm Door Closer Y300-OPSIL Size 3 Offset Parallel Arm Door Closer Y400-OPSIL Size 4 Offset Parallel Arm Door Closer Y500-OPSIL Close Yale A2600 Series Power Adjustable Hydraulic Door CloserPower adjustable 2-6 Yale A2400 Series Power Adjustable Hydraulic Door CloserPower adjustable 2-4 Yale A300 Series Hydraulic Door CloserFixed power size range of 3, 4, 5.