ABOUT US

With 20 years of experience under the belt in the double glazing industry, the team at 123door have come together to give its customers the best deals possible. We provide beautiful designs in different colour combinations, all without the hassle, without the pressure and most importantly, without the enormous price tag that big companies and salesmen come with.

We specialise in designing and installing quality windows and doors that are demanded all over in the Northern Ireland. We are offering Composite doors in Belfast, Northern Ireland, UPVC doors in Belfast, Northern Ireland, French Doors in Belfast, Northern Ireland, Patio Doors in Belfast, Northern Ireland, Bi-fold Doors in Belfast Northern Ireland, Upvc windows in Northern Ireland, Fascia and Guttering in Northern Ireland. These double glazing products will not only enhance the beauty of your house, but will keep you and your loved ones safe and sound.



Here at 123Door, our customer’s need and comfort are our top most priority.

We supply products that are designed to provide comfort to our customers. Our windows and doors will not only keep the heat inside but will also improve the thermal efficiency of your house. They also mute the outside noise making your home noise free and quiet.

With such a wide market of upvc windows, composite doors, upvc doors and more available online, it becomes difficult to decide on a company. 123Door give you many solid reasons to select us. One of the many valid reasons is the reasonable price of our high quality products. We aim to better anyone’s quote of the job that you possibly think of purchasing. Working with the top manufacturers in the Northern Ireland, you will be guaranteed the highest quality upvc windows and doors with state of the art security systems. . Our Composite doors, UPVC, Patio, French and Bi-fold doors in Belfast and Northern Ireland are the best doors available online.

Despite the tough competition nowadays, 123Door prides itself on maintaining its high standards of innovation, creation, product qualityand customer care. With our hard working team, we bring you the best in creativity and security. We do not waste our customer’s time and energy on irrelevant things. Unlike other companies we are always honest with our customers, providing them with clear and precise details regarding our products, offering them genuine prices and offers.

123Door employs a team of diligent and efficient people. Whether you choose to buy supply only, or supply and fit, we can deliver to your home for a minimal cost, or we can pass you over to one of our recognized fitting teams who cover your area. No matter what you choose, we at 123Door will make sure your transaction from payment, to delivery, to installation will be as easy as 1,2, 3.


So whether it is a new house or upgrading of an old one, a charming cottage or a graceful mansion, a conservative house or a wild one we have the right products for you.

can visit our website and click on Composite doors online, UPVC doors online, French doors online, patio doors online or bi-fold doors online

Call us today and get your perfect door.

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