Portuguese to English Tech/Engineering Materials (Plastics, Ceramics, etc.) toilets / sanitary fixtures

Dear colleagues,

I hope everything is well with you!
I would like to request your assistance with the term above. I would need the corresponding technical terminology.

CONTEXT (the context, in this instance, is a definition):

"Viga de madeira com seção transversal retangular, medindo cerca de 5 x 10 cm, destinada a distribuir a carga aplicada sobre o aparelho sanitário ensaiado. O comprimento deve ser compatível com as dimensões do aparelho. A massa não deve ser superior a 5,0 kg."

Please allow me to thank you in advance for your precious help.
All the best to you!