| Millennium Windows & Services | 01446 700108 | | 71 Romilly Park Road , Barry, CF62 6RR |  Map & Directions |
| Applied Products | 029 2047 2181 | | Unit K5 South Point, Foreshore Road, Cardiff, CF10 4SP | | Map & Directions |
| Hillbridge Specialist Joinery Ltd | 01443 733076 | | Maerdy Road, Maerdy Industrial Estate, Ferndale, CF43 4AB | | Map & Directions |
| Abacus | 01656 865191 | | 1 Pant Y Blodau, Pencoed, Bridgend, CF35 6LX | | Map & Directions |
| Griffin Windows Ltd | 01443 777333 | | Unit 37, Abergorki Industrial Estate, Treorchy, CF42 6DL | | Map & Directions |
| Jer Window Systems Ltd | 01446 772612 | | Unit 4, Vale Business Park, Llandow, Cowbridge, CF71 7PF | | Map & Directions |
| D G Window Systems | 07974 574653 | | Unit 4, Llwynypia Road, Tonypandy Enterprise Park, Tonypandy, CF40 2ET | | Map & Directions |
| Griffin Windows Ltd | 01443 777333 | | Salem Terrace, Tonypandy, CF40 2JJ | | Map & Directions |
| C & M Window Tinting Specialists Ltd | 01685 382444 | | 42 Williams Place, Merthyr Tydfil, CF47 9YH | | Map & Directions |
| Nationwide Frame Services | 029 2088 1120 | | Westside House, Pontygwindy Industrial Estate, Caerphilly, CF83 3HU | | Map & Directions |
| Salevon Ltd | 01446 745593 | | The Old Docks Canteen, Atlantic Way, Barry, CF63 3RA | | Map & Directions |
| Everest Ltd | 01443 771350 | | Cwmsaerbren Street , Treherbert, Treorchy, CF42 5HY | | Map & Directions |
| Window Trade Centre Wales Ltd | 01685 884590 | | Aberaman Park Industrial Estate, Aberaman, Aberdare, CF44 6DA | | Map & Directions |
| Swedish H-Windows | 029 2085 2244 | | 3 Clive Street, Caerphilly, CF83 1GE | | Map & Directions |
| B W M | 01443 841616 | | Unit A4, Severn Road, Treforest Industrial Estate, Pontypridd, CF37 5SQ | | Map & Directions |
| The Original Box Sash Window Co | 01443 693666 | | Unit 2, Merthyr Tydfil Industrial Park, Pentrebach, Merthyr Tydfil, CF48 4DR | | Map & Directions |
| Mister Doors | 01443 430839 | | 104 Penygraig Road, Tonypandy, CF40 1HB | | Map & Directions |
| Premier Trade Frames Ltd | 029 2088 1200 | | Premier House , Western Industrial Estate , Lon-y-Llyn, Caerphilly, CF83 1BQ | | Map & Directions |
| The Axis Window Co | 029 2088 8867 | | Unit 6, Bedwas Business Centre, Bedwas, Caerphilly, CF83 8DU | | Map & Directions |
| Madol | 029 2046 7100 | | Unit 4 Regents Court, Ocean Way, Cardiff, CF24 5HF | | Map & Directions |
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