Door security is of the highest standard, using a multi-point system of a deadbolt, two hookbolts, rollercams and dogbolts. This, coupled with four powerful hinges and the choice of internal glazing, combines to make it one of the most comprehensively designed door systems available on the market today. Secure by design Door security is of the highest standard, using a multi-point system of a deadbolt, two hookbolts, rollercams and dogbolts. This, coupled with four powerful hinges and the choice of internal glazing, combines to make it one of the most comprehensively designed door systems available on the market today.