Best Natural Ventilation Systems

Giro Era Womens Snow Helmet Matte White M

CONSTRUCTION - I.M. Construction fuses a tough polycarbonate outer shell with the helmet's impact-absorbing foam liner. The fusion process allows for better ventilation systems, making I.M. helmets lighter and cooler than traditional helmets..
FIT SYSTEM - In Form Fit System makes it easy to dial in a custom fit in seconds - even with gloves on. An ergo-friendly dial at the base of the helmet provides up to 6cm of adjustment and enhanced stability. Vertical Tuning feature accommodates different goggles and head shapes for a custom fit free of gaper gap (space between goggles and helmet)..
VENTILATION - Thermostat Control adjustable venting allows you to custom tune airflow instantly with a simple, low profile control button on the outside of the helmet. No other system is faster or easier to adjust, and nothing is more effective at keeping you comfortable. Stack Vent in the front of the helmet which aligns with your goggles and helps to keep them clear and fog free..
SEAMLESS COMPATIBILITY WITH ALL GIRO GOGGLES - Giro products have been meticulously designed and tested to work together. We've fine-tuned the pairings of our helmets and goggles using exhaustive testing in our Dome R&D center and translating those findings into the perfect Seamless Compati....

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Wika 52295711 Polycarbonate Low Pressure Differential Pressure Gauge with Surface Mount, Type A2G-10, 50\ WC Range, 4-1/2\ Diameter, +/-3% Accuracy, 2 x 1/8\ Hose Barb, Lower Connection

It designed to measure dry, clean non-aggressive gases and air.
It is ideally suited to measure differential pressure in filtration systems.
Pressure monitoring for HVAC, air handlers and ventilation systems and for pressure monitoring of clean rooms, gas scrubbers and dust collection systems.
Silicone rubber, polycarbonate wetted parts.
Mounting: 3 self-tapping mounting screws (standard).

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TBVECHI Electric Greenhouse Film Roll Up Motor 24V 100W Greenhouse Motor for Greenhouse Automatic Venting (1 Motor)

【STRONG POWER】This greenhouse electric film Roller has a 24V 100W motor, fit for most of your film ventilation roll up work..
【EXCELLENT MOTOR】Excellent reliabilty Ideal for greenhouse ventilation, light deprivation and blackout systems. Setting the limit switches on hoophouse roll up ventilation motors, electricl roll up winch..
【PACKAGE SIZE】24cm x 16cm x 12cm (9.4''x 6.3'' x 4.7'').
【EASY TO CARRY】The machine is light in weight and small in size, so it's very easy to carry wherever you go..
【WIDE APPLICANCE】The electric roll-up motor for greenhouse is used extensively in greenhouse such as the solar greenhouse, vegetable greenhouse, breeding greenhouses, flower greenhouses, connecting film greenhouses, fruit greenhouses greenhouse and other assembled greenhouse..

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4 Inch Dryer Vent Hose,16FT Aluminum Ducting for HVAC Ventilation, Flexible Air Duct Hose for Ac Exhaust, Kitchens,Grow Tent,Green Houses, 2 Clamps Include

003cb003eFLEXIBLE 3-LAYER MATERIAL003c/b003e:Designed for Three Layer,Double Aluminum Foil Inside + Thick White PVC Film for Lightproof,The Steel Wire Helix to Preserve the Shape,Keep Your Ventilation System Free of Rips and Pin Holes.YIJU Air Ducting Flexible Enough for Your HVAC Systems,Arbitrarily Bent,No Rigid Elbow,Reducing the Ventilation Resistance and the Leak of Wind..
003cb003ePVC VENT HOSE003c/b003e:White PVC Film,Lightproof and Waterproof,And Also Reducing Noise from Fans and Carbon Filter Systems.Compared to Traditional Aluminum Foil Hoses, PVC Dryer Vent Hose are Stronger, Less Prone to Tearing and Have a Long Service Life..
003cb003e4 INCH 16FT AIR DUCTING003c/b003e:YIJU's Flexible Aluminum Foil Duct is Ideal for General Purpose Exhaust Applications.We Specialize in Flexible Hose for Heating, Cooling, and Venting in Outside Air to Maintain High Quality Air Control.Whether You Want to Cool a Car, House, or Industrial Sized Building, We Have the Right Air Duct Hoses for the Task..
003cb003eVENTILATION FLEXIBLE DUCT WIDELY USED IN003c/b003e:Ducts are Conduits or Passages Used in Heating, Ventilation, and Air Conditioning (HVAC) to Deliver and Remove Air.Works with Fans and Carbon Filter, It Also Can be as Ac Exhaust Hose and Dryer Vent Hose.....

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4.4lb Expanded Clay Pebbles Grow Media- 0.43''-0.55'' Hydroponic Cultivation Soil Stone Supplies Aquarium Fish Tank Substrate Decorative Ceramsite Stone for Garden Aquaponics Hydroponics Plants

Raw Material: Our expanded clay pebbles are made from 100% natural clay and fired at high temperatures, which means they have a strong structure and no pungent odor, not easily broken and reusable. Besides, the soil is rich in organic matter..
Breathable Structure: There are small pores on the surface and interior of the expanded clay pebbles, which can not only inhale and store water, air and nutrients, but also provide good air permeability for the roots of plants, so that the plants can grow healthily..
Use Instructions: Wash the expanded clay pebbles before they are introduced into the hydroponic system. Our expanded clay pebbles can soak the water when you are watering your plants and release it when the roots need water..
Wide Applications: Expanded clay pebbles can be soaked overnight to put them in a net pot for cultivating hydroponic plants, or mixed into the soil to aid ventilation, or used as top dressing for potted plants to slow down water loss caused by light and air..
Applicable Occasion: These expanded clay pebbles can be used for hydroponic gardening, fish and vegetable symbiosis. In addition, they are also ideal for drainage, deep-water aquaculture and hydropower systems, and drip irrigation systems..

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Broan-NuTone 465B 4\ to 5\ Duct Expander for Kitchen Ventilation Fans, UL 94 Compliant, Black

DUCT EXPANDER: Designed to fit ventilation fans with a 4" duct connector and 5" round duct systems.
EASY CONNECTION: Allows easy connection of a kitchen ventilation fan (with 4" round duct connector) to 5" round ducting.
FLAMMABILITY COMPLIANT: Duct expander is UL 94 compliant for flammability to ensure safety.
MADE IN USA: This duct expander is made in the USA to ensure highest quality.
INVENT FAN: This duct increaser is designed to fit with our InVent fan duct connector assemblies.

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RKI 4" - Professional Backdraft Damper Inline Spring Loaded for Dryer Duct

Back draft damper for insertion into 4 inch ventilation ducts. The backflow damper RKI opens and closes automatically. It has a strong spring and can be installed either horizontally or vertically. The flap is suitable for retrofitting, since it is completely inside the duct.
A tight sealing and fastening of the duct is achieved by the rubber strip attached to the outside of the draft blocker damper. The rubber seal prevents loud rattling when the flap blades open and close. The housing of the flap is made of galvanized steel, the flap blades are made of aluminum, the axle and spring are made of stainless steel.
Designed for use in AC, dryers, exhaust, extractor or range hoods, heating systems, vents and other residential, commercial and industrial HVAC applications.
FUNCTIONALITY: Duct draft stopper prevent cold air or wind from entering the ventilation pipe. In this case, the flap is installed in such a way that the flap leaves only open into the outgoing air direction. This means that no (cold) air / wind can penetrate the ventilation pipe from the outside..

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Giro Union MIPS Snow Helmet - Matte Black - Size XL (62.5–65 cm)

*SIZE XL (62.5-65cm)* CONSTRUCTION - MIPS - Multi-Directional Impact Protection System. I.M. Construction fuses a tough polycarbonate outer shell with the helmet's impact-absorbing foam liner. The fusion process allows for better ventilation systems, making I.M. helmets lighter and cooler than traditional helmets..
FIT SYSTEM - In Form Fit System makes it easy to dial in a custom fit in seconds - even with gloves on. An ergo-friendly dial at the base of the helmet provides up to 6cm of adjustment and enhanced stability. Vertical Tuning feature accommodates different goggles and head shapes for a custom fit free of gaper gap (space between goggles and helmet)..
VENTILATION - Thermostat Control adjustable venting allows you to custom tune airflow instantly with a simple, low profile control button on the outside of the helmet. No other system is faster or easier to adjust, and nothing is more effective at keeping you comfortable. Stack Vent in the front of the helmet which aligns with your goggles and helps to keep them clear and fog free..
SEAMLESS COMPATIBILITY WITH ALL GIRO GOGGLES - Giro products have been meticulously designed and tested to work together. We've fine-tuned the pairings of our helmets and goggles using exhaustive testing in our Dome R&....

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Giro Avera Womens Snow Helmet - Matte Pink Street/Urchin - Size M (55.5–59cm)

*SIZE M (55.5–59cm)* CONSTRUCTION - I.M. Construction fuses a tough polycarbonate outer shell with the helmet's impact-absorbing foam liner. The fusion process allows for better ventilation systems, making I.M. helmets lighter and cooler than traditional helmets..
FIT SYSTEM - In Form Fit System makes it easy to dial in a custom fit in seconds - even with gloves on. An ergo-friendly dial at the base of the helmet provides up to 6cm of adjustment and enhanced stability. Vertical Tuning feature accommodates different goggles and head shapes for a custom fit free of gaper gap (space between goggles and helmet)..
VENTILATION - Thermostat Control adjustable venting allows you to custom tune airflow instantly with a simple, low profile control button on the outside of the helmet. No other system is faster or easier to adjust, and nothing is more effective at keeping you comfortable. Stack Vent in the front of the helmet which aligns with your goggles and helps to keep them clear and fog free..
SEAMLESS COMPATIBILITY WITH ALL GIRO GOGGLES - Giro products have been meticulously designed and tested to work together. We've fine-tuned the pairings of our helmets and goggles using exhaustive testing in our Dome R&D center and translating those findings into the p....

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