Your search for "stac system" revealed the following:

Readymade - SKC2 Stackable Utility (INTERNAL DIMENSION : 987 X 353 X 372MM)

Readymade - 1200-600-920-FCC Road Case - Stackable (INTERNAL DIMENSION : )

Readymade - SKC1 Stackable Utility (INTERNAL DIMENSION : 1167 X 467 X 472MM)

Readymade - SKC3 Stackable Utility (INTERNAL DIMENSION : 467 X 381 X 372MM)

Readymade - SKC4 Stackable Utility (INTERNAL DIMENSION : 557 X 467 X 372MM)

Readymade - 1200-600-600-F-CC Road Case - Stackable (INTERNAL DIMENSION : 1182 X 522 X 582MM)

SKB iSeries 1510-9 Waterproof Utility Case (Internal Dimensions: 381 x 264 x 228mm)

SKB iSeries 1610-5 Waterproof Utility Case (Internal Dimensions: 406 x 254 x 140mm)

SKB iSeries 1006-3 Waterproof Utility Case (Internal Dimensions: (273 x 156 x 83mm)

SporTube Series 1 | ST-1 (INTERNAL DIMENSIONS : 1220-2120 X 168 X 140MM)

SKB iSeries 1914N-8 Waterproof Utility Case (Internal Dimensions: 483 x 362 x 203mm)

SKB iSeries 3021-18 Waterproof Utility Case (Internal Dimensions: 762 x 533 x 457mm)

SKB iSeries 1510-4 Waterproof Utility Case (Internal Dimensions: 381 x 266 x 114mm)

SKB iSeries 0907-4 Waterproof Utility Case (Internal Dimensions: 235 x 184 x 101mm)

SKB iSeries 1813-5 Waterproof Utility Case (Internal Dimensions: 470 x 330 x 121mm)

SKB iSeries 1309-6 Waterproof Utility Case (Internal Dimensions: 340 x 241 x 165mm)

iSeries 3i-2011-7/8 Think Tank Designed Photo Divider Set | 5DV-2011-TT

SKB iSeries 0907-6 Waterproof Utility Case (Internal Dimensions: 238 x 187 x 153mm)

SKB iSeries 1209-4 Waterproof Utility Case (Internal Dimensions: 305 x 229 x 114mm)

SKB iSeries 0705-3 Waterproof Utility Case (Internal Dimensions: 191 x 127 x 83mm)