Double Crossarm H-Frame

Double Sided Construction

Traditional double arm construction has been improved with the reliability and longevity of PUPI® Series 5000 crossarms and optimized fiberglass braces.


Using a more traditional style of construction with the added strength of PUPI fiberglass components, double PUPI crossarm H-Frame designs provide unmatched strength for ultimate line hardening.


PUPI offers greater installation speed and flexibility with innovative spacer bracket and mount options available. H-Frame designs can include lightweight fiberglass knee, vee, and X-braces which are stronger and more durable than traditional wood braces.


Deadend assemblies are also available. Contact for more information.

Extensively Tested

PUPI double sided H-frame systems have been extensively tested and shown to exceed RUS strength requirements for TH-10 V4 construction by 146%.1

Deadend Assemblies

Deadend H-Frame Assemblies also available.

Contact us to learn more.

Tangent H-Frame Double Crossarm Series - Load Capacity Per Wire, 3 Wires
RUS Frame TypeSeries 5000 Crossarm Length (FT)Ultimate Verticle Load (LBS)Assembly Weight (LBS)2Deflection (IN/1,000 LBS)3
TH-10 V43231,0007410.2
TH-230 V44026,2508530.2
TH-345 V45523,00010700.2

PUPI H-Frame structures are designed for custom specifications or in standard Rural Utilities Service (RUS) frame types.

1 Calculations derived from the strength requirements provided in RUS specification T-7 for wood, double arm TH-10 V4 construction of 14,000 LBS.

2 Assembly weights do not include X-Braces. Traditional 32’ TH-10, fully braced, wood double crossarm construction weighs around 1,000 LBS.

3 TH-1AA design does not include knee-vee braces.


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