Cal-Royal 500 series closers are ideal for New Construction and Renovations, Including Office and Retail, Hotels, Commercial and Industrial Buildings. Cal-royal 500 closers meet and exceed ANSI Standard A156.4 GRADE 1. Universal hole pattern offering versatility and precision engineering for new and retrofit market. Cal-Royal 500 closers are non-sized, non-handed. fully adjustable 1 thru 5, (Barrier Free ADA) interior doors. For 30-260 lbs door weight.