Cullen Technical Guide 2026

Floors

HUH (Open Web Applications) Heavy Universal Hanger

Standard Installation – Open Web Header

See Page 39 For Installation Instructions

— Fill all red holes as indicated for this installation — No backer block/plywood gusset required — Top tabs to be wiped over and nailed — Min 2No fixings into rear ply and 1No fixing into front ply per leg for double headers — Additional triangular holes into face only required for solid headers

Additional triangular holes into incoming joist only required for enhanced uplift. (for details see page 38)

Load Data

Fixings (3.4 x 35mm)

Characteristic Capacity (kN)

Joist Depth (mm)

Hanger Depth (mm)

Header

Incoming

Uplift

Open Web Header

Face

Top

219-225 250-254 300-304 373-380 400-424

220-235 220-235

14 14 14 14 14

6 6 6 6 6

4 4 4 4 4

3.97 3.97 3.97 3.97 3.97

13.95 18.60 18.60 18.60 18.60

300 375 400

Standard Installation With Blocking – Open Web Header

See Page 40 for Installation Instructions

— Fill all red holes as indicated for this installation — Blocking piece required within joist, centred on hanger and minimum 47 x 72mm — No backer block/plywood gusset required — Top tabs to be wiped over and nailed — Min 2No fixings into rear ply and 1No fixing into front ply per leg for double headers Additional triangular holes into incoming joist only required for enhanced uplift. (for details see page 38)

Load Data

Fixings (3.4 x 35mm)

Characteristic Capacity (kN)

Joist Depth (mm)

Hanger Depth (mm)

Header

Open Web Header With Blocking

Incoming

Uplift

Face

Top

219-225 250-254 300-304 373-380 400-424

220-235 220-235

14 14 14 14 14

6 6 6 6 6

4 4 4 4 4

3.97 3.97 3.97 3.97 3.97

24.00 24.00 24.00 24.00 24.00

300 375 400

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