Dorset is a leading door closer manufacturer. Some of the product models are DC 80 Ext, DC 65 CO, DC 85 CO, DC 80 CO, DC 40 SM and DC 60 SM. The numbers in these door closer models represent weight of the doors supported by these door closers. These door closers have easy and accurate two valve opening, high quality hydraulic pressure oil and special O-ring seals to avoid leakages. These door closers have been tested for 5, 00,000 cycles. Some of the models are concealed door closers. Also, coming from a leading door closer supplier these products ensures your safety from fire by offering fire rated door closer.