sound insulated (dB) inspection hatch, hinged
Suitable for wall and ceiling structures, sound insulated inspection hatches owns durable and finished quality. Thanks to our patented fastening mechanism, the installation of the hatches is really fast and effortless. The installation does not require any studs or frames, and it is possible to do the installation completely without tools. 40 mm thick, sound insulating wool is used in the hatch, and a steam sealing strip has been added between the lid and the frame.
- Material hot-dip galvanized steel
- Powder-coated RAL9010, structure matt white
- 7 mm triangle lock
- Special sizes available
- Special colors available
- "The Key Flag symbol" (Made in Finland)
- Thickness only 42 mm from the installation surface inwards
- Sound insulation (dB) tested
| Title | Installation hole (mm) |
| PTL1515dB | 150x150 |
| PTL2020dB | 200x200 |
| PTL2030dB* | 200x300 |
| PTL2040dB* | 200x400 |
| PTL2060dB* | 200x600 |
| PTL2525dB | 250x250 |
| PTL3020dB* | 300x200 |
| PTL3030dB | 300x300 |
| PTL3040dB* | 300x400 |
| PTL3050dB* | 300x500 |
| PTL3060dB* | 300x600 |
| PTL4030dB* | 400x300 |
| PTL4040dB | 400x400 |
| PTL4060dB* | 400x600 |
| PTL4080dB* | 400x800 |
| PTL5050dB | 500x500 |
| PTL5060dB* | 500x600 |
| PTL6040dB* | 600x400 |
| PTL6050dB* | 600x500 |
| PTL6060dB | 600x600 |
| PTL6070dB* | 600x700 |
| PTL6080dB* | 600x800 |
| PTL8080dB* | 800x800 |
| PTL100100dB* | 1000x1000 |
The patented quick fastening mechanism, which is also used in Kiilax fire-rated hatches, is designed for double-layered plasterboard, and the frame also has holes for screw and nail fastening.
Hatches equipped with different locks are also possible, e.g. 10 mm triangular lock or serializable Abloy CL100.
Names of hatches and installation opening dimensions in order: width x height (hinge on the last page)
The dimension of the installation opening = the nominal dimension of the door
Outside dimension of the lid = nominal dimension of the hatch +35 mm
Sound insulation of PTL-dB hatches tested and classified Dn,e,w according to ISO 717-1:1996
PTL2020dB / 200x200 -> 47 Dn,e,w[dB]
PTL6060dB / 600x600 -> 43 Dn,e,w[dB]
* check the availability
Special sizes also available.