PRIORIT inspection opening closures

Large scale access for the technical building equipment (TGA)

Vast selection of inspection covers
Suitable for all types of walls – lockable – inexpensive

PRIORIT inspection covers leave no wishes unfulfilled. From inexpensive wall panel to hatches to classy premium covers, PRIORIT offers the right solution for each type of wall and every purpose.
The large selection ensures that a suitable inspection cover is available for any fire protection measure. As the locks work with DIN single cylinders, all PRIODOOR models (from the small hatch to the big door) can be opened and closed with keys from the building locking system. This provides safety and saves cumbersome searches for the right key during maintenance work.

In addition to many standard sizes you can get customized PRIODOOR fire safety covers for the price of standard products.
Find out now about all model types. All covers are made of non-combustible and classified materials and can be supplied with individual surfaces: white, grey, coloured, patterned or simply primed for painting.

For electrical distributors

For pipelines

For air conditioning

Inspection opening closure

Buildings must have safe escape and rescue routes according to the Model Building Regulations (MBO) so they can be safely evacuated. The design of installation ducts and particularly of inspection closures are regulated by the Model Directive on Technical Requirements for Fire Protection with Respect to Conduit Systems (MLAR).

There are four essential requirements for closures of installation ducts:

  • Permissible types of wall
  • Non-combustible
  • Fire integrity
  • Smoke-proof

Therefore, select and design closures for installation ducts with building components that were specifically designed and approved for that purpose. With regard to the common requirements for installation in wall types, non-combustibility, fire resistance and smoke-proofness, these are inspection closures specifically approved by the building authority as inspection closures, such as the inspection closures of PRIORIT. From inexpensive wall panel to hatches to classy premium covers, PRIORIT offers the right solution for each type of wall and every purpose.

PRIORIT Benefits

  • Lockable with DIN profile cylinder as standard
  • Tried and tested in many types of wall
  • Custom-made production at the standard price
  • Varied design with the best surfaces


  • Fire resistance 30/90 minutes, F 30/EI 30, F 90/EI 90
  • Smoke protection for cold and hot fumes
  • Non-combustible composite, classified A2 – s1, d0
  • MLAR, sample pipe installation directive
  • Access protection through PC-lock cylinder/system

The optimal fire protection solution for every building situation

Simply combine your preferred wall type with PRIORIT inspection opening closures/fire protection closures the most economical solutions for you to separate distribution systems in escape routes, to create installation shafts and to form fire compartments.

Catalogues & Brochures

Everything about products, services and information for download. So you can get comprehensive information – and in an environmentally friendly way.

Inspection covers

Download the current overview brochure “Revision opening closures”.

Inspection covers

Take a look at our product selection of revision closures.