Standard Adjusters Chrome plated brass telescopic hatch adjusters with a positive locking nut. A variety of installation positions is possible as one end swivels and the other end pivots. RWB1360 – 280 to 460mm telescopic RWB2237 – 320 to 550mm telescopic Spare Part SP269 – Replacement knob assembly suit both Heavy Duty Adjuster Chrome plated brass. Features same as standard size shown at left – but with larger diameter tube, heavier swivel, pivot and locking knob. RWB1362 – 310 to 530mm telescopic Spare Part SP270 – Replacement knob