DG Supplyline utilises the knowledge and expertise of the whole DG Group, to supply specialised hardware to a national network of fitters, repairers, maintenance companies, locksmiths and other industry related companies.

We have an extensive catalogue of supplies including General Hardware, Window Hardware, Sliding Doors, Keeps, Gaskets & Seals, Tools & Fixings and even CCTV!

No need to waste time attempting to identify or locate a component part for a double glazed window or door; DG Supplyline possess in-depth knowledge of spare or repair parts and can identify exactly what you need!

Both our showroom and office are based in Southend-on-Sea, Essex and for over 10 years we have built up a loyal customer base by always putting the customer first. Our collective knowledge provides us with the tools to supply and source even the most difficult to find pieces of window & door hardware and our useful online resource has one of the widest product ranges in the UK.

We stock thousands of spare parts including:

  • Window handles
  • Door fittings
  • Glazing packers & bridges, frame packers etc
  • Handle keys
  • Replacement locks
  • Multipoint locks
  • PVCu doors and windows
  • Sliding patio door locks
  • Sash case locks
  • Tilt & turn systems
  • Shootbolt parts

We also stock several ranges of accessories including letterboxes, wedges, levers, caps, springs, rollers, hinges, fitch catches, restrictors, vents and cylinders. The list is endless!

Established in 1999 as a subsidiary company of DG Servicing. We are dedicated to upholding the same exemplary standards of quality and professionalism of the DG Group and of course, we always put the customer first!

We are constantly seeking new and innovative products to aid and assist other businesses within the double glazing repair industry. Our large team of dedicated highly trained staff are trained in DG Servicing and have a combined knowledge and familiarity of component parts for hundreds of current and obsolete systems. This allows us to provide customer service that is second to none.

Contact us today, we are here to help in any way we can.

Call us on 01702 351 911 (Sales) or reach our Accounts team on 01702 608 832.

Opening Hours


9:00am - 5:00pm


9:00am - 5:00pm


9:00am - 5:00pm


9:00am - 5:00pm


9:00am - 5:00pm






Our Address:

138-140 Prince Avenue, Southend-on-Sea SS0 0NW


51.55879883752488, 0.6935249633062313

Contact Owner