Ismat Enterprises

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32inch exhaust fan, 0.5hp motor, 1400rpm, SS blades

Used in poultry and greenhouse

Wall-Mounted Axial Fans
​These are the workhorses of warehouses and garages. They feature large blades that pull air directly through a wall. 
​Best for: General ventilation in large open spaces. 
​Pros: High CFM, relatively easy to install.
​Cons: Noisy; doesn't handle "static pressure" well (struggles if air has to travel through long ducts).
​2. Centrifugal "Upblast" Fans
​Commonly seen on the roofs of restaurants. These look like mushrooms and use a "squirrel cage" wheel to pull air up and out.
​Best for: Commercial kitchens (grease exhaust) and high-resistance ductwork. 
​Pros: Extremely powerful; keeps the motor out of the airstream to prevent grease buildup/overheating. 
​3. Drum & Barrel Fans
​While technically portable, heavy-duty versions are used for "man-cooling" on factory floors.
​Best for: Directional spot-cooling. 
​Pros: High mobility, steel-shrouded for safety and durability. 
​What to Look for (The "Heavy Duty" Checklist)
​If a fan is truly industrial-grade, it should check these boxes:
​Motor Insulation: Look for Class F or H insulation. This means the motor can handle higher internal temperatures without the wiring melting.
​Totally Enclosed Fan Cooled (TEFC): This motor design prevents dust, moisture, and debris from entering the motor housing—essential for woodshops or humid environments. 
​Material: Blades should be aluminum (lightweight/rust-proof) or galvanized steel (extreme durability). Avoid plastic in any heavy-duty application.
​Automatic Shutters: For wall-mounted units, gravity shutters are a must. They prevent backdrafts, rain, and pests from entering when the fan is off.
​A Quick Guide to Sizing (CFM)
​To find out how much power you actually need, use the Air Change per Minute rule. For most "heavy-duty" needs (like a smoky workshop), you want to replace the air every 2 to 3 minutes.

Wall-Mounted Axial Fans
​These are the workhorses of warehouses and garages. They feature large blades that pull air directly through a wall. 
​Best for: General ventilation in large open spaces. 
​Pros: High CFM, relatively easy to install.
​Cons: Noisy; doesn't handle "static pressure" well (struggles if air has to travel through long ducts).
​2. Centrifugal "Upblast" Fans
​Commonly seen on the roofs of restaurants. These look like mushrooms and use a "squirrel cage" wheel to pull air up and out.
​Best for: Commercial kitchens (grease exhaust) and high-resistance ductwork. 
​Pros: Extremely powerful; keeps the motor out of the airstream to prevent grease buildup/overheating. 
​3. Drum & Barrel Fans
​While technically portable, heavy-duty versions are used for "man-cooling" on factory floors.
​Best for: Directional spot-cooling. 
​Pros: High mobility, steel-shrouded for safety and durability. 
​What to Look for (The "Heavy Duty" Checklist)
​If a fan is truly industrial-grade, it should check these boxes:
​Motor Insulation: Look for Class F or H insulation. This means the motor can handle higher internal temperatures without the wiring melting.
​Totally Enclosed Fan Cooled (TEFC): This motor design prevents dust, moisture, and debris from entering the motor housing—essential for woodshops or humid environments. 
​Material: Blades should be aluminum (lightweight/rust-proof) or galvanized steel (extreme durability). Avoid plastic in any heavy-duty application.
​Automatic Shutters: For wall-mounted units, gravity shutters are a must. They prevent backdrafts, rain, and pests from entering when the fan is off.
​A Quick Guide to Sizing (CFM)
​To find out how much power you actually need, use the Air Change per Minute rule. For most "heavy-duty" needs (like a smoky workshop), you want to replace the air every 2 to 3 minutes.

Industrial exhaust fans are the heavy-duty workhorses of the ventilation world. Unlike your standard bathroom fan, these are engineered to move massive volumes of air, heat, or chemical vapors out of large spaces like factories, warehouses, and commercial kitchens. 
​Think of them as the "lungs" of an industrial facility—they keep the environment breathable and the machinery from overheating. 
​Core Types of Industrial Fans
​The "best" fan depends entirely on how much resistance (static pressure) the air faces as it moves.Why They Matter (Beyond Just "Fresh Air")
​If you're looking into these, you're likely solving one of three problems:
​Temperature Control: In facilities with heavy machinery or glass manufacturing, the ambient heat can become dangerous. Fans create the necessary air changes per hour (ACH) to drop the temp. 
​Contaminant Removal: They exhaust welding fumes, chemical vapors, or fine dust that could lead to respiratory issues or even explosions (in which case, you’d need an Explosion Proof motor). 
​Moisture Management: Essential in food processing or paper mills to prevent mold growth and structural damage.

Greenhouse exhaust fans are the "lungs" of your growing operation. Without them, your greenhouse becomes a stagnant, humid box that can bake your plants or invite a buffet of fungal diseases.
​Here is a breakdown of why they matter and how to choose the right one.
​ Why You Need One
​Simply opening a door or vent often isn’t enough. Active ventilation provides:
​Temperature Control: Rapidly removes hot air that accumulates at the peak.
​Humidity Management: Prevents "transpiration stall" and mold by venting moist air.
​CO2 Replenishment: Plants breathe CO2; fans pull in fresh, CO2-rich air from outside.
​Stem Strength: Minor air turbulence creates "mechanical stress," resulting in thicker, stronger stalks.How to Size Your Fan (The Math)
​You need to be able to swap out the total volume of air in your greenhouse every 1 to 2 minutes.
​Calculate Volume: V = Length \times Width \times Average Height
​Determine CFM (Cubic Feet per Minute): Your fan’s rating should be equal to or greater than your greenhouse volume.
​Example: If your greenhouse is 800 cubic feet, you need at least an 800 CFM fan to clear the air once per minute.
​Pro Tip: If you live in a very hot climate or have a lot of shade-blocking equipment, multiply your required CFM by 1.25 to account for the extra resistance.
​ Installation Basics
​Placement: Install the exhaust fan as high as possible on one end wall (since heat rises).
​The Intake: You must have an intake vent on the opposite wall, ideally positioned low. This creates a cross-breeze that clears the entire structure.
​Automation: Use a thermostat or humidistat controller. It’s much easier (and safer for the plants) to have the fan kick on automatically at 80F than to remember to flip a switch. 

When it comes to poultry farming, exhaust fans are the "lungs" of the operation. They don’t just move air; they control temperature, remove toxic ammonia, and manage humidity to keep your flock healthy and productive. 
​Here is a breakdown of the essential details you need to know about poultry exhaust fans.

Industrial exhaust fans are the heavy-duty workhorses of the ventilation world. Unlike your standard bathroom fan, these are engineered to move massive volumes of air, heat, or chemical vapors out of large spaces like factories, warehouses, and commercial kitchens. 
​Think of them as the "lungs" of an industrial facility—they keep the environment breathable and the machinery from overheating. 
​Core Types of Industrial Fans
​The "best" fan depends entirely on how much resistance (static pressure) the air faces as it moves.Why They Matter (Beyond Just "Fresh Air")
​If you're looking into these, you're likely solving one of three problems:
​Temperature Control: In facilities with heavy machinery or glass manufacturing, the ambient heat can become dangerous. Fans create the necessary air changes per hour (ACH) to drop the temp. 
​Contaminant Removal: They exhaust welding fumes, chemical vapors, or fine dust that could lead to respiratory issues or even explosions (in which case, you’d need an Explosion Proof motor). 
​Moisture Management: Essential in food processing or paper mills to prevent mold growth and structural damage.

A hammer exhaust fan is a specialized type of high-capacity axial fan, primarily used in large-scale agricultural or industrial settings like greenhouses, poultry farms, and factories. 
​The name doesn't come from the fan hitting anything; it refers to the swinging "hammer" (or drop-hammer) mechanism used to open and close the shutters.
​The "Hammer" Mechanism
​The standout feature of this fan is how it handles its shutters. In cheaper fans, the shutters open simply because the air pushes them. In a hammer fan:
​Start-up: As the motor spins, centrifugal force causes a weighted "hammer" or linkage system to swing outward.
​Positive Opening: This physical movement mechanically forces the shutters to open 90 degrees and lock in place.
​Efficiency: Because the shutters are held open mechanically, the fan doesn't waste energy "pushing" them open. This allows for 100% airflow efficiency.
​Seal: When the fan stops, the hammer drops, ensuring the shutters snap shut tightly to prevent wind, rain, or pests from entering.
​Key Features & Construction
​Blades: Usually made of high-grade stainless steel or galvanized steel to resist corrosion in humid environments.
​Belt Driven: Most hammer fans use a belt and pulley system. This allows the motor to run at high speeds while the large fan blades turn at a slower, more efficient RPM.
​High Volume, Low Pressure: Unlike centrifugal fans (which handle high pressure), hammer fans are designed to move massive volumes of air (high CFM) across open spaces.  Common Use Cases
​Poultry & Livestock: Keeping air fresh and temperatures down to prevent heat stress in animals. 
​Greenhouses: Controlling humidity and CO2 levels.
​Industrial Plants: Removing smoke, dust, or heat from large manufacturing floors

Wall-Mounted Axial Fans
​These are the workhorses of warehouses and garages. They feature large blades that pull air directly through a wall. 
​Best for: General ventilation in large open spaces. 
​Pros: High CFM, relatively easy to install.
​Cons: Noisy; doesn't handle "static pressure" well (struggles if air has to travel through long ducts).
​2. Centrifugal "Upblast" Fans
​Commonly seen on the roofs of restaurants. These look like mushrooms and use a "squirrel cage" wheel to pull air up and out.
​Best for: Commercial kitchens (grease exhaust) and high-resistance ductwork. 
​Pros: Extremely powerful; keeps the motor out of the airstream to prevent grease buildup/overheating. 
​3. Drum & Barrel Fans
​While technically portable, heavy-duty versions are used for "man-cooling" on factory floors.
​Best for: Directional spot-cooling. 
​Pros: High mobility, steel-shrouded for safety and durability. 
​What to Look for (The "Heavy Duty" Checklist)
​If a fan is truly industrial-grade, it should check these boxes:
​Motor Insulation: Look for Class F or H insulation. This means the motor can handle higher internal temperatures without the wiring melting.
​Totally Enclosed Fan Cooled (TEFC): This motor design prevents dust, moisture, and debris from entering the motor housing—essential for woodshops or humid environments. 
​Material: Blades should be aluminum (lightweight/rust-proof) or galvanized steel (extreme durability). Avoid plastic in any heavy-duty application.
​Automatic Shutters: For wall-mounted units, gravity shutters are a must. They prevent backdrafts, rain, and pests from entering when the fan is off.
​A Quick Guide to Sizing (CFM)
​To find out how much power you actually need, use the Air Change per Minute rule. For most "heavy-duty" needs (like a smoky workshop), you want to replace the air every 2 to 3 minutes.

When it comes to poultry farming, exhaust fans are the "lungs" of the operation. They don’t just move air; they control temperature, remove toxic ammonia, and manage humidity to keep your flock healthy and productive. 
​Here is a breakdown of the essential details you need to know about poultry exhaust fans.

Wall-Mounted Axial Fans
​These are the workhorses of warehouses and garages. They feature large blades that pull air directly through a wall. 
​Best for: General ventilation in large open spaces. 
​Pros: High CFM, relatively easy to install.
​Cons: Noisy; doesn't handle "static pressure" well (struggles if air has to travel through long ducts).
​2. Centrifugal "Upblast" Fans
​Commonly seen on the roofs of restaurants. These look like mushrooms and use a "squirrel cage" wheel to pull air up and out.
​Best for: Commercial kitchens (grease exhaust) and high-resistance ductwork. 
​Pros: Extremely powerful; keeps the motor out of the airstream to prevent grease buildup/overheating. 
​3. Drum & Barrel Fans
​While technically portable, heavy-duty versions are used for "man-cooling" on factory floors.
​Best for: Directional spot-cooling. 
​Pros: High mobility, steel-shrouded for safety and durability. 
​What to Look for (The "Heavy Duty" Checklist)
​If a fan is truly industrial-grade, it should check these boxes:
​Motor Insulation: Look for Class F or H insulation. This means the motor can handle higher internal temperatures without the wiring melting.
​Totally Enclosed Fan Cooled (TEFC): This motor design prevents dust, moisture, and debris from entering the motor housing—essential for woodshops or humid environments. 
​Material: Blades should be aluminum (lightweight/rust-proof) or galvanized steel (extreme durability). Avoid plastic in any heavy-duty application.
​Automatic Shutters: For wall-mounted units, gravity shutters are a must. They prevent backdrafts, rain, and pests from entering when the fan is off.
​A Quick Guide to Sizing (CFM)
​To find out how much power you actually need, use the Air Change per Minute rule. For most "heavy-duty" needs (like a smoky workshop), you want to replace the air every 2 to 3 minutes.

A hammer exhaust fan is a specialized type of high-capacity axial fan, primarily used in large-scale agricultural or industrial settings like greenhouses, poultry farms, and factories. 
​The name doesn't come from the fan hitting anything; it refers to the swinging "hammer" (or drop-hammer) mechanism used to open and close the shutters.
​The "Hammer" Mechanism
​The standout feature of this fan is how it handles its shutters. In cheaper fans, the shutters open simply because the air pushes them. In a hammer fan:
​Start-up: As the motor spins, centrifugal force causes a weighted "hammer" or linkage system to swing outward.
​Positive Opening: This physical movement mechanically forces the shutters to open 90 degrees and lock in place.
​Efficiency: Because the shutters are held open mechanically, the fan doesn't waste energy "pushing" them open. This allows for 100% airflow efficiency.
​Seal: When the fan stops, the hammer drops, ensuring the shutters snap shut tightly to prevent wind, rain, or pests from entering.
​Key Features & Construction
​Blades: Usually made of high-grade stainless steel or galvanized steel to resist corrosion in humid environments.
​Belt Driven: Most hammer fans use a belt and pulley system. This allows the motor to run at high speeds while the large fan blades turn at a slower, more efficient RPM.
​High Volume, Low Pressure: Unlike centrifugal fans (which handle high pressure), hammer fans are designed to move massive volumes of air (high CFM) across open spaces.  Common Use Cases
​Poultry & Livestock: Keeping air fresh and temperatures down to prevent heat stress in animals. 
​Greenhouses: Controlling humidity and CO2 levels.
​Industrial Plants: Removing smoke, dust, or heat from large manufacturing floors