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Tristar Grade A Surface Boxes

Tristar BS 5834-2 Grade A surface boxes are suitable for use in carriageways carrying fast-moving commercial vehicles having wheel loads up to 5 tonnes. They are designed for quick, easy and reliable access and are available with hinged, double-tri and single piece covers.

Tristar Grade A Surface Box

Double triangular covers

Tristar double triangular surface box rated to Grade A and are suitable for use in carriageways carrying fast-moving commercial vehicles having wheel loads up to 5 tonnes. They are designed to be strong and durable.

Stock code Range Clear opening
(mm)
Overall frame
(mm)
Frame depth
(mm)
My Wrekin
DBT0A4/1515 Tristar 150 x 150 230 x 230 100
DBT0A4/2222 Tristar 225 x 225 305 x 305 100
DBT0A4/3030 Tristar 300 x 300 380 x 380 100
DBT0A4/1515/KT Tristar 150 x 150 250 x 250 100
DBT0A6/1515 Tristar 150 x 150 260 x 260 150

Single Piece Covers

Stock code Range Clear opening
(mm)
Overall frame
(mm)
Frame depth
(mm)
My Wrekin
DBS0A5/3823/KT Tristar 380 x 235 505 x 355 125
DBS0A4/1010 Tristar 105 x 105 195 x 195 100
DBS0A6/1010 Tristar 105 x 105 195 x 195 150

Single piece covers, circular opening

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