M186E Ductile Iron Round Manhole Cover E600 Category: Manhole Covers > Airport and Ports Weight 75 ± 3 kg Load Class E600 Locking System Automatic Lock
M931 Ductile Iron Round Manhole Cover F900 Category: Manhole Covers > Airport and Ports Weight 160 ± 10 kg Load Class F900 Locking System Manual Lock
M901 Ductile Iron Round Manhole Cover F900 Category: Manhole Covers > Airport and Ports Weight 81 ± 3 kg Load Class F900 Locking System Automatic Lock
