Panel Tolerances (as Manufactured)
Panel Size-Molded +/-1/8″(+/-3mm) (width,length & diagonal)
Panel Size-Pultruded +/-1/4″(+/-6mm) (width,length & diagonal)
Grating Depth +/-1/16″(+/-1.5mm)
Panel Flatness(Warp) +/-1/32″(+/-0.8mm)per ft. (length direction)
  +/-1/16″(+/-1.5mm)per ft. (Width direction)


Cutting Tolerances(as Fabricated)
Rectangular Cuts +0″, -1/4″ (+0, -6.4mm)
Straight Cuts +0″, -1/4″ (+0, -6.4mm)
Circular Cuts +0″, -3/8″ (+0, -9.5mm)


Grating Clearances
To Side of Trench 1/4″ (6.4mm)
To Wall 1/2″ (13mm)
Between Panels 0″ to 1/4″ (0 to 6.4mm)
Minimum Support Width 1 1/2″ (38mm) minimum(nominal)
Attachment 2 Hold-downs at Each Suppport


Plate 1/8″(3mm) min. attached with bolts or leg screws
Straight Banding – attachments spaced 12″(30.5mm) centers
Curved Banding – attachments spaced 9″(23mm) Max. (dependant on radius)