USE Removable seal for inspecting pits made of concrete or other material with finish matching the surrounding pavement. Complete with TTQST 8 × 110 bolts.
EXAMPLE porphyry, tiles, wood, carpeting, concrete, etc.
LIFTING lifting system with central screw
FRAME 10/10 thick metal sheet up to S2L 353, 15/10 thick for all other sizes
FRAME “L” shaped 10/10 thick profile
SURFACE TREATMENT Cold-rolled pre-galvanized frame according to UNI 4721 standards