Fire Rated Diffuser

Air Distribution Products

Fire Rated Diffusers

Ceiling Diffusers | Linear Diffusers and Bar Grilles | Grilles and Registers
Plenum Slot and Light Troffer | Fire Rated Diffusers

Fire Rated Diffusers

Nailor's comprehensive range of fire rated diffusers and versatile selection and sizing ensures the correct product for any application.

All fire rated diffusers are classified for use in UL/ULC restrained or unrestrained floor/ceiling and or roof/ceiling assemblies which incorporate an exposed grid suspended ceiling (lay-in T-bar) with up to a 3 hour rating. For details of fire rated assemblies, see the current UL Fire Resistance Directory or ULC List of Equipment and Materials Vol. III Fire Resistant Ratings.



Fire Rated Perforated Ceiling Diffusers Supply Models: 4070, 4080 Flush Face 4075, 4085 Drop Face Return Models: 4070R, 4080R Flush Face 4075R, 4085R Drop Face 1, 2, 3 or 4-Way Adjustable Discharge Pattern Round Neck 3 Hour Rating Lay-In	Fire Rated Perforated Curved Blade Diffusers Supply Models: 4070CB, 4080CB Flush Face 4075CB, 4085CB Drop Face 4-Way Adjustable Discharge Pattern (Standard) Round Neck 3 Hour Rating Lay-In


Fire Rated Pattern Ceiling Diffusers Models: 6500FRD Fixed Pattern 6550FRD Adjustable Pattern 6500IVFRD Induction Vanes Square Neck 3 Hour Rating Louvered Face High Capacity Lay-In	Fire Rated Pattern Ceiling Diffusers 6505FRD Fixed Pattern 6555FRD Adjustable Pattern 6505IVFRD Induction Vanes Round Neck 3 Hour Rating Louvered Face High Capacity Lay-In


Fire Rated Square Modular Core Ceiling Diffusers Square Neck Model: 7500FRD Round Neck Model: 7505FRD 1, 2, 3 or 4-way Adjustable Discharge Pattern 3 Hour Rating Lay-In	Fire Rated Stamped Square Ceiling Diffusers Full Face Models: 4010, 4020 Panel Type Models: 4030, 4040 Fixed Air Pattern High Performance Round Neck 3 Hour Rating Lay-In


Fire Rated Stamped Square Ceiling Diffusers Model: 4010-SM 12 x 12 (300 x 300) Module Type S Surface Mount Frame Fixed Air Pattern Round Neck 3 Hour Rating Surface Mount	Fire Rated Adjustable Stamped Square Ceiling Diffuser Full Face Models: 4010-1, 4020-1 Panel Type Models: 4030-1, 4040-1 Horizontal to Vertical Adjustable Discharge Pattern High Performance Round Neck 3 Hour Rating Lay-in


Fire Rated Stamped Square Ceiling Diffusers Full Face Models: 4410, 4420 Panel Type Models: 4430, 4440 Fixed Air Pattern High Performance Round Neck 3 Hour Rating Surface Mount	Fire Rated Architectural Square Ceiling Diffusers Full Face Models: 4410-UNI, 4420-UNI Panel Type Models: 4430-UNI, 4440-UNI High Performance Round Neck 3 Hour Rating Lay-In


Fire Rated Fixed Perforated Down Blast Diffuser UNI-PDFR High Performance Round Neck 3 Hour Rating Lay-In	Fire Rated Adjustable Down Blast Diffuser UNI-ADFR High Performance Round Neck 3 Hour Rating Lay-In


Fire Rated Ductless Return Grilles Perforated Face: 4111, 4112, 4113 Eggcrate Face: 4114, 4115, 4116 Open Face ( grille by others) : 4117, 4118, 4119 Volume Control Option 3 Hour Rating Lay-In	Fire Rated Ductless Return Filter Grilles Louvered Face: 4121, 4122, 4123 Eggcrate Face: 4124, 4125, 4126 Volume Control Option 3 Hour Rating Lay-In


Fire Rated Ductless Return Filter Grilles 4127, 4128, 4129 Raised Type 3 Hour Rating Lay-In	Open Faced Fire Rated Plenum Diffusers 5200 Series For Use With Linear Type Diffusers 3 Hour Rating Lay-In


Fire Rated Plenum Slot Diffusers 5500 Series Curved Blade 'Flip-Flop' Pattern Controller 3 Hour Rating Lay-In	Fire Rated Plenum Slot Diffusers 5500WB Series Adjustable 'Wiper Blade' Pattern Controller 3 Hour Rating Lay-In


Fire Rated Plenum Slot Diffusers 5500T Series Adjustable 'Ice Tong' Pattern Controller 3 Hour Rating Lay-In	Fire Rated Plenum Slot Return Diffuser 5500R Series 3 Hour Rating Lay-In