Airtight Plastic Access Panels

Fully airtight and high-level acoustic performance plastic access panels for providing access to concealed services and connections behind dry lined walls, ducts, ceilings, and cupboard units.

An economical solution for providing access to concealed services and helping to meet the requirements of:

  • Building Regulation Part L – Conservation of Fuel and Power (air leakage)
  • Building Regulation Part J – Heat Producing Appliances (concealed boiler flue inspection access)
  • Building Regulation Part E – Resistance to Sound

Features a unique integral airtight seal design that reduces the air permeability to 0.00/h.m +50pa, under positive pressure test conditions.


  • Provides access to services and connections behind dry lined walls, ducts, ceilings and cupboard units
  • Complete solution to meet the highest levels of Building Regulation Part L and Building Regulation Part J and the gas safety industry’s concealed boiler flue inspection requirements (non-fire rated applications)

Product Information

Airtight Plastic Access Panels

Frame fitting sizeClear opening sizeOverall panel and frame sizeDoor typeProduct code
115 x 165mm100 x 150mm135 x 185mmClip fitAP110AT
155 x 235mm140 x 220mm195 x 275mmClip fitAP150AT
205 x 205mm190 x 190mm245 x 245mmClip fitAP200AT
305 x 305mm290 x 290mm345 x 345mmClip fitAP300AT
470 x 470mm455 x 455mm510 x 510mmClip fitAP450AT

  • Purpose made product saves time and money compared with traditional joiner–made or steel access doors
  • Unique airtight seal design reduces the air permeability to 0.00/h.m at +50pa
  • Flush fitting door panels that can be fully removed for maximum access
  • Excellent aesthetic appearance and finish
  • Textured finish allows painting if required
  • Visible picture frame surround smartly conceals cut out edges and contributes to a faster installation
  • Universal door handing
  • Installed in minutes using basic hand tools and silicon or flexible sealant
  • Clip fit door panels with catch clip closing mechanism
  • Acoustic performance of 31dB
  • Manufactured to BS EN ISO 9001 and BS EN ISO 14001
  • Helping to meet Building Regulation:
    • Document Part J – Concealed Flues in Voids (2010 edition)
    • Document Part E – Resistant to Sound (2003 edition)
    • Part L1 and L2 – Conservation of Fuel and Power (2013 edition)
  • Tough and UV stabilised injection moulded HIPS/ABS plastic. White finish.
  • Cut hole to size, making sure that it is straight and level.
  • Apply silicon or other suitable grade building adhesive to the back of the frame.
  • Press the frame firmly into place, checking it is straight and level.
  • Do not operate until the adhesive has set completely.
  • Simply push the clip fit door panel into the frame.
  • Clean using a soft cloth with a mild detergent.
  • State which size of panel is required and confirm the hole cutting size.

L20 Doors/Shutters/Hatches

Clause 630^ HATCHES

  • Manufacturer: Timloc Building Products, Timloc House, Ozone Park, Howden, East Yorkshire, DN14 7SD. T: 01405 765567 W:
  • Type: Airtight access panels
  • Product code: AP300AT (see other product codes/variations of sizes)
  • Frame fitting size: 305 x 305mm
  • Application: Wall, ceiling, cpboard or voids
  • Frame type: Picture
  • Colour: Textured white ABS plastic

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