Overhead Door Closer C/W Back Check & Delay Silver - Matlock

Matlock: Overhead Door Closer C/W Back Check & Delay Silver This comprehensive range of Door Controls feature varying power sized units for many different door applications. They come with a choice of architectural covers which are each available in 26 different plated or colour coated finishes. To help select the correct closer for you, each unit has a listing showing their key features, certification numbers and fire ratings. Plated arms are available on certain units only, and test certificates are available upon request. BS EN1154 Classification This standard classifies door closers using a 6 digit coding system. Each digit relates to a particular feature of the product measured against the standards performance requirements. Digit (1) - Category of use: '3' denotes the unit is for closing doors from at least 105. '4' denotes the unit is for closing doors from 180 open. Digit (2) - Durability: '8' successfully completed 500,000 test cycles. Digit (3) - Test door mass/size: Seven