• Light domes / pyramids with outer shell of high impact proof polycarbonate and screw joint securing

JET safety level 2: 

Steel grids fitted into the clear opening or the fall-through prevention system type DSD for direct mounting on the trapezoidal sheet

JET safety level 3: 

Steel tube with amply dimensioned cross beam fitted in the clearance

JET safety level 4: 

Roll grate securing according VdS-guidline 2333 with reinforced cross beam as burglar resistant securing, compliant with resistance classification 3 according DIN V ENV 1625

JET safety level 5: 

Level 1 to 4 with additional securing by JET- dry reed contacts for flaps against unnoticed opening and JET-EM-concussion detector surface fitting for detection of impact load of any character

•  Starting from safety level 2 alternative JET-TOP 90 light domes can also be used