External doors Icon Key
Fire Doors (FD)
Howdens doors are tested to BS476: Part 22: 1987 achieving fire resistance up to 30 minutes (FD30) or 60 minutes (FD60) when hung and installed in accordance with the instructions provided with the door. All are third party certified and where applicable marked accordingly.
Part E Doors (E) -Sound Reducing
Doors which conform to Building Regulation Part E help to minimise sound travel, providing a peaceful and quiet environment (Scottish Part H).
Part L Doors (L) -Warmth & Insulation suitable for new build
Doors carrying Building Regulation Part L have a greater thermal efficiency and help to keep rooms warm and cosy (Scottish Part J). Suitable for most 'Part L' projects. A 'U' value of 2.00 w/m2 k or better is achieved by these products.
Part L Doors (L) -Warmth & Insulation suitable for refurbishment
Doors carrying Building Regulation Part L have a greater thermal efficiency and help to keep rooms warm and cosy (Scottish Part J). Suitable for
refurbishment projects as the glazed area of the door is less than 50% of door and frame area.
Part M Doors (M) -Mobility and Access
For access and facilities for disabled people, wider doors and reduced threshold heights are required by Building Regulation Part M. (selected sizes only)
FSC (F) Forestry Stewardship Council
The Forest Stewardship Council (FSC) is an international organization that brings people together to find solutions which promote responsible stewardship of the world's forests. The mark of responsible forestry. Copyright 1996 Forest Stewardship Council A.C. Certificate number: SA-COC-001813
PEFC (P) Programme for the Endorsement of Forest Certification
PEFC is a framework for the recognition of forest certification schemes meeting internationally recognised requirements for sustainable forest management. Certificate number: PEFC/16-37-398.


