# Unistrut channel series: 1-5/8 in (P1000 to P5500, back-to-back), 1-1/4 in A series and 13/16 in P6000 / P7000: sizes and gauges

> What Unistrut channel sizes exist besides 1-5/8 x 1-5/8 (P1000): half height, 1-1/4 in, 13/16 in and back-to-back, and what gauge is each?

- Category: Hardware › Framing
- Kind: Standard part
- Basis: Unistrut Ohio channel-size table, Unistrut product pages (P4000, P6000), Unistrut Store 13/16 page; no profile dimensions were readable for 1-1/4 and 13/16 series
- Page: https://xemstudio.com/objects/strut-channel-series-1-5-8-1-1-4-13-16/ · JSON: https://xemstudio.com/api/geometry?object=strut-channel-series-1-5-8-1-1-4-13-16 · Plain text: https://xemstudio.com/objects/strut-channel-series-1-5-8-1-1-4-13-16/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

**Exact dimensions.** True size, with no tolerance added.

## Notes

- Beyond the 1-5/8 in channel (strut-channel-1-5-8 page, which already draws the 7/8, 13/16, 1, 1-3/8, 2-7/16 and 3-1/4 in tall profiles and the 3-1/4 in back-to-back), Unistrut also sells a 1-1/4 in wide 'A series' and a 13/16 in wide light series. Part numbers, heights and gauges are from Unistrut Ohio's channel-size table; * means special order (P3000 low volume). Back-to-back sections (last digit 1) are two channels welded back to back.
- 13/16 in channel is 19 gauge, 0.040 in (1.0 mm) thick; its slot, flange and lip are NOT given in any text read. The only drawing found (P7000 in a distributor catalog PDF) came back as unlabeled numbers (7/16, 3/16, 3/16, 13/16, 3/32, .243, .163, 13/32) that could not be assigned to features, so no 13/16 or 1-1/4 profile is drawn. The 1-5/8 in x 13/16 in, 16 gauge (P4000) profile is the one the strut-channel-1-5-8 page says prints different flange numbers; those numbers were not found either.
- Section properties read from Unistrut's own product pages: P4000 (area 0.244 in², weights 0.82 lb/ft pre-galvanized to 0.869 hot-dip) and P6000 (area 0.107 in²). Hole and slot patterns on these pages: 'punched holes are also available', no sizes.
- Eaton B-Line equivalents (B52, B54 for 1-5/8 x 13/16) are on the strut-channel-1-5-8 page. No files.

## Sizes

| family | part number | width x height, in | steel ga | stainless ga | aluminum / section |
|---|---|---|---|---|---|
| 1-5/8 series, single | P1000 | 1-5/8 x 1-5/8 | 12 | 12 | 0.109 in |
| 1-5/8 series, single | P1100* | 1-5/8 x 1-5/8 | 14 | 14 | — |
| 1-5/8 series, single | P2000* | 1-5/8 x 1-5/8 | 16 | — | — |
| 1-5/8 series, single | P3000 | 1-5/8 x 1-3/8 | 12 | — | — |
| 1-5/8 series, single | P3300 | 1-5/8 x 7/8 | 12 | 12 | — |
| 1-5/8 series, single | P4000 | 1-5/8 x 13/16 (half height) | 16 | 16* | 0.078 in* |
| 1-5/8 series, single | P4100 | 1-5/8 x 13/16 | 14 | — | — |
| 1-5/8 series, single | P4400* | 1-5/8 x 1 | 12 | — | — |
| 1-5/8 series, single | P4520* | 1-5/8 x 13/16 | 12 | — | — |
| 1-5/8 series, single | P5000 | 1-5/8 x 3-1/4 | 12 | 12 | — |
| 1-5/8 series, single | P5500 | 1-5/8 x 2-7/16 | 12 | — | 0.109 in |
| 1-5/8 series, back to back | P1001 | 1-5/8 x 3-1/4 | 12 | 12 | 0.109 in |
| 1-5/8 series, back to back | P1101* | 1-5/8 x 3-1/4 | 14 | 14 | — |
| 1-5/8 series, back to back | P2001* | 1-5/8 x 3-1/4 | 16 | — | — |
| 1-5/8 series, back to back | P3001 | 1-5/8 x 2-3/4 | 12 | — | — |
| 1-5/8 series, back to back | P3301 | 1-5/8 x 1-3/4 | 12 | 12 | — |
| 1-5/8 series, back to back | P4001 | 1-5/8 x 1-5/8 | 16 | 16* | 0.078 in* |
| 1-5/8 series, back to back | P4401* | 1-5/8 x 2 | 12 | — | — |
| 1-5/8 series, back to back | P4521* | 1-5/8 x 1-5/8 | 12 | — | — |
| 1-5/8 series, back to back | P5001 | 1-5/8 x 6-1/2 | 12 | 12 | — |
| 1-5/8 series, back to back | P5501 | 1-5/8 x 4-7/8 | 12 | — | 0.109 in |
| 1-1/4 A series | A1000 | 1-1/4 x 1-1/4 | 14 | — | 0.075 in |
| 1-1/4 A series | A1001 | 1-1/4 x 2-1/2 (back to back) | 14 | — | — |
| 1-1/4 A series | A3300 | 1-1/4 x 3/4 | 14 | — | — |
| 1-1/4 A series | A3001 | 1-1/4 x 1-1/2 (back to back) | 14 | — | — |
| 13/16 series | P6000 | 13/16 x 13/16 | 19 | 19 | 0.040 in |
| 13/16 series | P6001 | 13/16 x 1-5/8 (double) | 19 | — | 0.040 in |
| 13/16 series | P7000 | 13/16 x 13/32 | 19 | — | 0.040 in |
| 13/16 series | P7001 | 13/16 x 13/16 (double) | 19 | — | 0.040 in |
| section properties | P4000 (1-5/8 x 13/16, 16 ga, solid) | 0.244 in² (1.6 cm²) | I 0.023 in⁴, S 0.049 in³, r 0.306 in | I 0.092 in⁴, S 0.113 in³, r 0.613 in | 0.82 lb/ft (pre-galvanized); 0.45 lb/ft aluminum |
| section properties | P6000 (13/16 x 13/16, 19 ga) | 0.107 in² (0.7 cm²) | I 0.009 in⁴, S 0.020 in³, r 0.295 in | I 0.012 in⁴, S 0.029 in³, r 0.333 in | 0.36 lb/ft (pre-galvanized); 0.14 lb/ft aluminum |

## Where the files are

- Unistrut Ohio (Unistrut service centre): [Unistrut channel sizes: 1-5/8, 1-1/4 (A series) and 13/16 (P6000 / P7000) single and back-to-back, steel / stainless gauges, aluminum thickness](https://www.unistrutohio.com/unistrut-channel-sizes) — web — Publisher's page; dimensions are facts
- Unistrut (Atkore): [P4000: 1-5/8 x 13/16, 16 ga, solid: section properties, weights, lengths](https://unistrut-us-live.ae-admin.com/product-details/p4000) — web — Publisher's page; dimensions are facts
- Unistrut (Atkore): [P6000: 13/16 x 13/16, 19 ga: section properties, weights, lengths](https://unistrut-uk-live.ae-admin.com/product-details/p6000) — web — Publisher's page; dimensions are facts
- Unistrut Store: [13/16 Unistrut metal framing: P6000, P6001, P7000, P7001 sizes, 19 gauge (.040 in)](https://unistrutstore.com/blog/post/13-16-strut) — web — Publisher's page; dimensions are facts

## Questions

**What is P4000 Unistrut?**

1-5/8 in wide x 13/16 in tall (half height) solid channel, 16 gauge; area 0.244 in², 0.82 lb/ft pre-galvanized.

**What is the difference between P1000 and P4000?**

Both 1-5/8 in wide; P1000 is 1-5/8 in tall and 12 gauge, P4000 is 13/16 in tall and 16 gauge.

**What is 13/16 Unistrut?**

A lighter 13/16 in wide 19 gauge (0.040 in) channel: P6000 is 13/16 in tall, P7000 13/32 in tall; P6001 and P7001 are doubles.

## Fits with

- [Strut channel, 1-5/8 in (Unistrut / B-Line): profile, lips, slots and hole patterns](https://xemstudio.com/objects/strut-channel-1-5-8/)
- [Strut channel nuts (spring nuts) for 1-5/8 in channel: threads, thickness and loads](https://xemstudio.com/objects/strut-channel-spring-nuts/)
- [Strut flat plate fittings, 1-5/8 in: splice, tee and L corner plates (B-Line B129, B141, B341, B133, B143)](https://xemstudio.com/objects/strut-flat-plate-fittings/)
- [Strut 90° angle fittings, 1-5/8 in: B101 and B104 corner angles](https://xemstudio.com/objects/strut-angle-fittings/)
- [Strut U fittings, Z fittings and post bases, 1-5/8 in: B116-12 U-support](https://xemstudio.com/objects/strut-u-z-fittings-post-bases/)