The Polyaire PD Perforated Diffuser are available with a square or rectangular face supplied through a round or square neck.
Standard construction is of a fixed core, while a removable or hinged core option is available.
Perforated Diffusers can also be manufactured in a heavy robust form for Security Grille applications.
Standard finish is powder coat white while other finishes are available to suit the interior and architectural design requirements.
Perforated Diffusers are manufactured to order, standard free area is 51%