Nailor 6500-FRD Series Pattern Ceiling Diffusers are a high capacity louvered face directional diffuser that can supply large volumes of air at relatively low sound levels and pressure drops. Available in a variety of core styles and neck sizes; a combination can be selected to suit a specified air pattern and deliver the desired volume of air to suit particular requirements.

4000 and 4400 Series Diffusers are a fire rated version of the popular RNS Series Stamped Square Ceiling Diffusers. They hare designed to provide an extremely cost effective product that offers both the unobtrusive appearance required for architectural excellence and the 360° diffusion pattern at minimum NC levels required for high engineering performance.

Nailor 4400-UNI Series Fire Rated Stamped Square Diffusers are the UL classified and listed fire rated version of the popular UNI series. Designed with the architect in mind, the diffusers in this series are fashioned to blend in with most ceiling types to create the ultimate aesthetic look.

Nailor 4070, 4075, 4080, and 4085 Series Fire Rated Perforated Diffusers are a popular choice and frequently specified solution. Available in both supply and return air styles with a choice of a flush or drop face.  Adjustable pattern controller design available for ultimate performance flexibility. 

This diffuser features four individual spring-loaded 'modular' pattern controllers mounted in the neck. They can be adjusted before or after installation, to provide a 1, 2, 3 or 4-way discharge pattern. The diffuser maintains a horizontal ceiling pattern from maximum to minimum flow.

Nailor 4110 Series Fire Rated Return Air Grilles have been designed to complement the Nailor range of fire rated supply diffusers. The grilles have been tested and classified for use without the requirement of duct work or supplementary support, they simply lay in place. Available in three styles: perforated face, eggcrate face, or an open face model that can accommodate a grille by others.

Nailor Models 4121, 4122, 4123, 4124, 4125, and 4126 Fire Rated Return Air Filter Grilles have been designed to complement the Nailor range of fire rated supply diffusers. Manufactured to accommodate a throw away filter by others, the grilles have been tested and classified for use without the requirement of duct work or supplementary support, they simply lay in place. The filter grilles are available in two styles: louvered face or eggcrate face.

This unique product features a raised ceiling radiation damper mounted on an extended support frame above the ceiling line. It will accomodate any type of return air grille, filter grille or register manufactured from steel or aluminum. This allows the design engineer greater flexibility.

This fire rated plenum is designed for lay-in T-Bar. It can accommodate steel or aluminum grilles, registers or linear type slot diffusers and bar grilles. A turned in leg design is available to suit lay-in type cores and a hemmed leg design is available to accommodate concealed mounting angles.

Nailor 5500 Series Fire Rated Plenum Slot Diffusers are designed for  supply and return air lay-in T-Bar applications. The supply air models feature pattern controllers that are available in three performance styles and four slot widths, up to four parallel slots. The return models are designed to match the look of the supply air models.