ULMA U100K Drainage Kit with Iron Age Interlaken Grate | Baked on Oil Finish


Iron Age grate part no.: IA5-20I21
TDS grate part no.: IA-INTER-0520-BF


This pre-sloped polymer concrete trench drain kits uses the ULMA Type U100K channel with integral galvanized steel edging.  It has an external width of 130 mm, an internal width of 100 mm, and is available in overall heights ranging between 130 mm and 280 mm.  Channels are 1 meter in length and have a 0.5% slope. Locking system consists of locking bar CS100 and hex head screws.  Installation hardware is included.

Ulma U100K channel schematic diagram
Ulma U100K Channel Dimensions


Ulma’s U100K channel fits Iron Age Designs decorative cast iron trench grating measuring 122 mm x 498 mm.  This kit has the Interlaken pattern, which is available in either the raw casting or Baked on Oil Finish (BooF).

Your #1 Trench Drain Supply Resource!12-BF

Grate Pattern



Product Type

Drainage Kit

Load Class

Load Class B


Metric Options, ULMA


Animal and Zoo, Commercial, Driveway Drainage, Greenhouse, Industrial, Municipal

Finish Type


Grate Finish

Grate Length

Grate Load Class

Grate Width

5 inch

CSI Code 22 00 00, 22 14 00, 22 14 26, 22 14 26.19, 33 30 00, 33 40 00, 33 44 00, 33 44 13, 33 44 16, 33 46 13