Heavy Duty Gray Iron USF 6516 Frame Rail 1.5″ x 48″

SKU: USF 6516

Grate rail sold as a single 48″ piece


Cast iron frames provide an ideal design option for poured trench drain systems by providing a preformed ledge for grates to sit on. The 1.5″H x 48″L frame holds a 1.5″ thick grate (grates not included). The USF 6516 frame has low-profile anchors built in to help lock it securely into concrete during frame installation.

NOTE: Due to the weight of this product, expect higher than normal shipping costs. Contact Customer service to explore possible alternatives (ground vs. freight).

Purchase grates separately.

Price shown is for 1 frame bar. Frame bar sold as a 4ft section. Can be cut in half to add a 2 foot to a run.

Load class ratings for entire systems will always be determined by the lowest class within the system. For example, if the channel is rated as a C and the grate is rated as a D, the overall system will be rated as load class C. The same is true should the channel be rated as load class C and the grates are rated as load class A; the system as a whole would be rated as load class A.

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East Jordan, TDS

Grate Height

1 1/2 inch

Product Type



Frame and Grate

Grate Material


Animal and Zoo, Commercial, Driveway Drainage, Greenhouse, Industrial, Municipal, Patio, Residential, Transportation


Cast Iron Frame

CSI Code 05 53 00, 05 56 00, 22 00 00, 22 14 00, 22 14 26, 22 14 26.19, 33 40 00, 33 44 16, 33 46 13