Box-outs and Flexi formwork

FRANK manufactures a varied range of box-out shutters made of steel and cardboard to create apertures and recesses. These products correspond to all relevant national and international guidelines and standards.


Box-outs - Steel

FRANK box-outs are manufactured from formed sheet steel. Therefore, for many sizes of box-out additional stiffening is not required. For detailed information please refer to the corresponding stiffening chart. For large box-outs additional inside stiffening with wooden bracing is usually required for increased stability and better resistance to the concrete pressure.

Instead of bracing on site, we can supply the preassembled box-outs complete with bracing.

  • Low freight charges, space saving storage
  • Easy and quick assembly with self tapping screw using pre-drilled hole

Box-outs - Cardboard

Cardboard box-out forms are an economic and efficient means of creating slab apertures.

  • High-quality coated cardboard, pressed and perforated in one sheet
  • Stable due to internal stiffening

For larger openings we recommend the use of sheet steel box-outs.

Joint profile former - for shear force transfers

The joint profile former is a plastic profile used as formwork for concrete sections. After removal of the joint profile former, the first concrete section is ready for the pouring of the second concrete section.

  • Gives concrete an optimum surface for absorption of shear forces at construction joints
  • Joint profile formers are made of plastic – they are easily removed from concrete and are suitable for multiple use

Cardboard formwork - Flexischaler

The FRANK Flexischaler provides an individually shaped formwork and ensures perfectly straight shuttering for precast applications. 


Specialist Permanent Formwork

The FRANK range of specialist permanent formwork offers solutions to the need for innovative formwork for many in-situ and precast concrete structures. 

Fibre Forms

A range of fibre concrete, fibre cement and cement based wooden chipboard formwork for a variety of permanent formwork applications. 

Fibre-reinforced concrete - Permanent edging formwork

Permanent edging formwork made of fibre-reinforced concrete is used as formwork in semi-precast and precast elements:

  • Precast elements - for production of various types of precast unit requiring permanent edging formwork e.g., precast balconies and special slabs for stair landings
  • Twin-Wall construction – permanent formwork used for inner surfaces of doors and windows for structural wall systems

Fibre-reinforced concrete - Shutter panels

This shutter panel is used as a floor-edge formwork and as a covering for formwork joints in insitu concrete constructions.

Fibre-reinforced concrete - Bevel formwork element

This formwork element with bevelled edges is used as permanent formwork for the edge beams of bridges.

Fibre cement - Shutter panels

Shutter panels made of fibre cement are used as permanent infill formwork between steel beams for bridge construction. They are also used as building boards for cladding of structural members and as backing strips for the erection of prefabricated building components. These cement-based panels are extremely durable. 

Cement bonded chipboard - Lintel formwork

Lintel formwork is manufactured using a high-pressure, cement bonded chipboard which is a category B1 flame resistant material. The use of these lintel forms reduces the cross section of the lintel to be concreted. Using permanent lintel formwork at the construction site facilitates faster more efficient formwork erection and concreting of ring beams and lintels.

Cement bonded chipboard - Floor-edge forms

These forms are a cost efficient permanent floor edge element without insulation properties. Floor-edge forms are produced with grouted anchor holes on the inside surface in order to ensure a good bond with in-situ concrete. The floor is ready for concreting approximately 2 hours after fixing of the form in position.

Insulated Formwork

Floor edge and ring beam insulating forms for eliminating cold bridging in buildings. The use of these forms replaces time consuming traditional walling operations and the need for temporary formwork.

DIS Floor-edge insulated forms

DIS floor-edge insulating forms act as a permanent formwork for the floor-edge:

  • preventing cold bridging
  • ensuring an excellent bond between concrete and plaster due to mineral plaster lathwork
  • Heights to match any slab thickness can be delivered on request

RIS Ring beam insulated forms

Combining a 60 cm thick floor-edge insulating element on the outside with a 30 cm thick element on the inside a ring beam shuttering can be produced. The required stability is achieved using re-usable clamps.

Max Frank Limited
Whittle Road, Meir
Stoke-on-Trent, ST3 7HF
United Kingdom

Phone: 01782 598041
Fax: 01782 315056

Service Box


Formwork and recess formers (2623.4kB)