Max connector 21mm. Dimensions 45 x 21mm. The DG series plastic cable glands are made from UV stable nylon. They are available in an aperture range of 8mm to 40mm and have an attractive, low profile shape. The range has passed independent rigorous dust and waterproof testing to IP 68. Each unit is supplied with clear fitting instructions and A4 stainless steel fixings. DG Deck Glands are easy to fit and do not require the removal of fitted connectors when installing. The DG Series aluminium cable glands are made from marine grade anodised aluminium.