China Metal Inspection Door False Ceiling 300X300, Find details about China Inspection Door, Inspection Flaps from Metal Inspection Door False Ceiling 300X300
Neck size | Opening size W1XL1 | Overall W2XL2 |
196x196 | 192X192 | 235X235 |
296x296 | 292X292 | 335X335 |
396x396 | 392X392 | 435X435 |
496x496 | 492X492 | 535X535 |
596x596 | 592X592 | 635X635 |