SG HD range is constructed with 16 mm dia steel bars welded into a 6 mm steel frame, the SG HD range is built to SEAP security ratings. The grille is installed into the external wall with fixing bolts through the wall liner, and can be hidden with a DWL exterior louvre. Units can be retrofitted. The FVA matches that of AFP’s pressure vents. On an exterior wall the grille is hidden by a DWL/EXP exterior louvre unit. AFP SEAP certified products available through AFP 3rd party supplier.
Made to order, lead time 5-10 working days.
We can also supply the SGHD’s with SR2 and SR3 rating, these are constructed with 20mm for SR2 & 25mm for SR3 dis steel bars, the grille is fixed into the exterior wall with fixing bolts through the wall liner. Units can be retrofitted.