Bridgend Windows Fensa Registered. Fensa Registered Local Double Glazing Bridgend supplier installer and fitters near you. We offer a full Bridgend product range that includes high-quality windows, doors, conservatories and roofline. At MPN we are a FENSA registered company (registration fensa number 37294) the leading body providing homeowners protection in the double glazing industry trusted by Government, Consumers, Local Authorities and Industry.