Manufacturer and supplier of roof products and accessories for the metal building industry since 1964

Cold Storage Smoke Vents | ExoVent™ Cold Heat & Smoke Hatches

ExoVent™ Cold was discontinued in 2024 – This webpage will remain available to provide ongoing support.

ExoVent™ Cold – Heat & Smoke Ventilators for Cold Storage

The R&S High-R Cold Storage Smoke Vent is for cold storage buildings that require smoke ventilation. Product features 6″ R-39 insulation and a complete thermally-broken design that eliminates interior condensation. Operates with (2) UL listed fusible links which melt at preset temperatures and opens the lids. Optional McCabe re-settable links operate the same way but also include electronic activation. Includes high-performance gas springs and a custom latching system rated for a 90 PSF uplift. Interior and exterior release with hold-open arms that lock the vent in the open position. Lids open against a 10 PSF live load.

The cold storage smoke hatch includes curbs that fit any metal building roof panel. Self-flashing caps are also available for conventional roofs. Vent lids are aluminum with 6″ insulation. Curb comes standard in aluminum with a cost-saving galvanized steel option. Mill finish comes standard but may include a powder coat or Kynar custom color finish as specified. Various sizes are available.

ExoVent™ Cold Storage Smoke Vent – Details Download: Download

  • Description
  • Model Guide
  • Sizes and Weights
  • Documents
  • FAQ
  • R&S Insights


Material 0.063″/0.080″ aluminum lid and curb
Optional galvanized steel curb
EnergyShield Polyiso Rigid Insulation – QTY (6) @ 1″ Thick R39
Construction Mitered corners, fully welded seams
Full perimter EPDM bulb gasket mechanically secured to top flange
12″ high curb
Thermally Broken Inside to Outside surfaces
Operation UL Listed Fusible Link activation temperatures (F): 165, 212, 286, 370, 520
Interior and exterior opening provisions
Gas Springs Low spring rate nitrogen gas springs for smooth operation. Black cathodic epoxy finish
Pitch Non-pitch corrected, slopes with roof
Finish Aluminum mill finish
Powder coat (standard colors or custom)
Kynar (exact match)
Accessories 14 GA backer-channel
Sealants, fasteners
Warranty 5 Years

Metal Building – Type Seam Clip/Layover Side Flanges

Standard design features with seam-to-seam / layover side flanges. Highest level of weather-tightness for metal building applications.

Curb Up-slope Flange installs under panel
Panel closures welded
4″ high water diverter
Curb Down-slope Flange installs over panel
Caps (straps) welded or shipped loose
Minimum 3″ down-slope flange
Curb Side Flanges Seam-to-seam, integrates with roof panel
Minimum 3″ between curb sidewall and panel seam

Metal Building – Type Flat Side Flanges

Standard design features with flat side flanges. Lower cost option.

Curb Up-slope Flange installs under panel
Panel closures welded
4″ high water diverter
Curb Down-slope Flange installs over panel
Caps (straps) welded or shipped loose
Minimum 3″ down-slope flange
Curb Side Flanges 3″ flat flange
Minimum 3″ between curb sidewall and panel seam

Conventional / Built Up Roofs

Standard design features with 3″ flat flange and self-flashing provisions

Base Flanges 3″ flat perimter base flange
Self-Flashing Provisions Perimeter cap flashing accepts roof material


McCabe Link McCabe resettable Link offers thermal / electronic activation of release. Provides flexible integration with existing fire safety equipment. Simplifies required annual testing process as no cutting is required. Can be electronically activated from ground level.
Stainless Steel Hardware Hinge and clevis pin assembly constructed of type 316 stainless steel for ultimate protection against corrosion

Hi R Non-Listed Automatic Smoke Vent – Model Guide

Model WxL Base Material Base Type Link Type Link Temp Options (list all that apply)
DLSH Hi R AL: Aluminum

ST: G-90 Galvanized Steel

SS: Stainless Steel

SF: Self Flashing

CM: Curb Mount

MB: Metal Building Flat Flange

MBSC: Metal Building Seam Clip

MBLO: Metal Building Layover

F: Fusible Link

M: McCabe Re-settable Link






SS: Stainless Steel Hardware

FP: Fall Protection Screen


Example: DLSH Hi R-6096-AL-MBSC-F165-FP is a non-listed high R automatic heat and smoke vent with a solid lid, aluminum construction with an integral seam clip metal building curb, a fusible 165F link, and integral fall protection screen

Standard Sizes And Shipping Weights

Non-Listed High R Smoke Vent Models

Model Inside Clear Opening Weight (Steel) Weight (Aluminum) Open Capacity Lid Uplift Capacity
DLSH-Hi R-6060 60″ x 60″ 850 lbs 600 lbs 10 PSF 90 PSF
DLSH-Hi R-6072 60″ x 72″ 950 lbs 665 lbs 10 PSF 90 PSF
DLSH-Hi R-6090 60″ X 90″ 1100 lbs 770 lbs 10 PSF 90 PSF
DLSH-Hi R-6096 60″ x 96″ 1150 lbs 800 lbs 10 PSF 90 PSF

Non-Listed Smoke and Heat Vents

Product Description Model Submittal Specifications Installation Warranty


Options Model Submittal Specifications Installation
Security Bars Type 1 SB-1 PDF WORD
Security Bars Type 2 SB-2 PDF WORD
Security Bars Type 3 SB-3 PDF WORD

ExoVent™ Cold Storage Smoke Vent FAQ

How do Cold Storage Smoke Vents Differ from Standard Smoke Vents?

Cold storage smoke vents are designed for low-temperature environments with superior insulation, sealing, and materials suited for cold conditions.

Why is Insulation Important for Cold Storage Smoke Vents?

Insulation in cold storage smoke vents is crucial to prevent heat ingress, maintain low temperatures, and ensure the integrity of stored items.

Are Cold Storage Smoke Vents Automatically Operated?

Yes, cold storage smoke vents open automatically during a fire, typically through heat-sensitive mechanisms.

How Do Cold Storage Smoke Vents Comply with Fire Safety Standards?

These vents comply with fire safety standards and codes, ensuring functionality in extreme cold conditions for safety and ventilation.

What are the Considerations for Installing Cold Storage Smoke Vents?

Considerations include selecting durable materials for cold conditions and ensuring proper insulation for effective installation.

R&S Insights Blog

R&S Competitive Advantage – Smoke Vents

R&S supplies among the highest quality vents at very competitive prices. Due to the higher quality of our product we… Learn More

Smoke Vent Systems for General Contractors

In the construction and building-safety world, smoke vent systems are extremely important. These systems do more than just comply with regulations, they are essential for keeping people safe and protecting the building’s structure…  Learn More

Selecting the Best Architectural Smoke Vents

Selecting the best architectural smoke vents is a critical decision for any architect or building owner… Learn More

Smoke Vents – Operable vs. Melt-Outs – Which is Best?

When evaluating operable smoke ventilators versus melt-out units, architects, builders and contractors should weigh the pros and cons of each before making a decision… Learn More

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R&S manufactures a vast array of products to fit your project needs. We aim to supply all of your metal building roof accessory needs, not just one product. Why go to multiple vendors when R&S can supply it all?