Product Description

Unveil Boundless Gardening Potential with Exaco RIGA Greenhouse 4!

Imagine having a garden in your backyard that's full of plants and flowers, no matter the season. The RIGA 4 can make that happen. It's made with great materials and has a cool design that helps your plants grow all year. Whether you're a gardening expert or just starting, this greenhouse is perfect for you.

Bad weather? No problem! This greenhouse can handle it. Its strong build and weather-resistant materials mean it can stand up to heavy snow and strong winds. The design helps keep the temperature steady inside, so you don’t need extra heating in the winter. Your plants will stay cozy and safe no matter what.

Exaco RIGA 4 greenhouse setup in a lush garden, showcasing its spacious interior with various plants and shelves for optimal gardening.

Enable the Cultivation of Plants and Crops Throughout the Year

  • Spacious Interior: With 135 sq. ft. of growing space (14' long Ă— 9'8" wide Ă— 7'6" high), you’ll have plenty of room to grow vegetables, herbs, flowers, or tropical plants all year round.
  • Built to Last: Crafted from rust-resistant 13-gauge aluminum and insulated with 8mm twin-wall polycarbonate side panels and 10mm gable panels, this greenhouse can withstand strong winds, heavy rain, and snow.
  • Efficient Climate Control: Designed with superior insulation and weather resistance, the RIGA 3s helps maintain a stable growing environment no matter the season.
  • Smart Ventilation: Comes with 2 roof vents (with automatic openers) and a large rear window (30" Ă— 42") to ensure healthy airflow and prevent overheating.
  • Secure & Practical Entry: A heavy-duty barn-style hinged door with keyed lock provides easy access and peace of mind for your gardening tools and plants.
  • User-Friendly Assembly: Pre-drilled holes, clear instructions, and smart design make setup straightforward—no special tools required.
  • Stylish, Functional Design: The greenhouse’s curved shape not only looks elegant in any garden but also helps shed snow and resist strong winds.
  • Optional Stability: Add a galvanized steel foundation base for extra strength and long-term anchoring.
Riga Greenhouse interior view with flowers

Feel the Warmth of Summer All Year in Your Hoklartherm RIGA Greenhouse

This greenhouse has lots of room. It's 14 feet long, 9 feet 8 inches wide, and 7 feet 6 inches tall. That's plenty of space for all kinds of plants! You can grow tall tomatoes, sprawling cucumbers, or delicate flowers. Plus, it comes with a base kit to keep everything level and secure.

Good airflow is super important for plants, and the Riga Greenhouse 4 has it covered. It has roof windows that you can open to let in fresh air. The automatic vent openers help keep the temperature just right by opening and closing the windows based on how warm it is inside. This keeps your plants happy and healthy.

Ready to start an awesome garden? The Hoklartherm Riga Greenhouse 4 is your year-round buddy with lots of space, a strong build, and smart features. Don’t let the weather stop you. Order today and enjoy a vibrant garden all year!

Hoklartherm Riga Greenhouses 4 opened door

Give Your Plants the Best Environment to Thrive with a RIGA Greenhouse

German Craftsmanship Built by Hoklartherm with decades of expertise, ensuring top-quality and long-lasting performance.
Strong & Durable Reinforced frame profiles and tough materials provide exceptional strength and stability.
Superior Ventilation Well-designed vents, windows, and doors deliver excellent airflow for healthy plant growth.
High-Quality Glazing German-made polycarbonate panels offer better insulation and durability than standard glazing.
Raised base of Riga Greenhouse

Feel Safe and Comfortable with a Strong and Dependable Greenhouse

Adaptable Shelving Optional shelving systems with removable inserts and sturdy trays fit plants of any size.
Secure Foundation An optional 6-inch foundation frame anchors the greenhouse firmly for reliable stability.
Elegant & Functional Design Bell-shaped roof improves insulation, sheds snow easily, and adds a stylish look to any garden.
Flexible & Easy to Expand Available in multiple sizes with room for future expansion, plus straightforward assembly with included instructions.
Exaco Riga Greenhouses 4 on heavy snow

Download Manual of Riga 4 Greenhouse

Specifications of Riga Greenhouse 4

Size 9'8" W x 14' L x 7'7" H
Area 135 square feet
Construction Extremely heavy-duty
Insulation First-class insulation: R or K-value 3.0
Warranty Polycarbonate: 10 years; Frame: 15 years
Door Heavy-duty Dutch Barn Door with keyed lock: 30" W x 72" tall. 72" tall narrow unit / 79" tall wide unit
Rear Wall Window Oversized Rear Wall window: 30" W x 42" H with adjustment arm
Roof Windows Roof Window(s): 40" W x 24" D; with Automatic Window Opener
Polycarbonate 8 MM UV coated twin-wall polycarbonate over the main body
Front & Back Walls 10 MM twin-wall polycarbonate for extra strength
Inside Walking Height 6'1" near shelves, 6'11" in the middle of the narrow unit, and 7'6" high for a wide unit
Assembly Time 2 people, 1 full day (3 makes it easier and reduces it to 6-8 hours, excluding any shelves)

Get the Most Out of Your Greenhouse with Our Accessory Bundle

The standard accessory kit for all RIGA models makes your greenhouse more useful and stable. It includes a top shelf and a bottom shelf for storing plants or tools, and a foundation frame base that keeps the greenhouse steady, especially if it's not cemented down. This bundle is offered at a lower price and fits any Riga greenhouse, adding more storage and stability.

Exaco RIGA Greenhouse bottom shelf with plants displayed on top

Top & Bottom Shelves

Keep plants and tools organized with a 10" wide top shelf and 25" wide bottom shelf.

Close up image of a foundation frame for Exaco Riga Greenhouses

Foundation Frame Base

The foundation frame for Riga Greenhouses is buried in a trench if not anchored to concrete and is available for all sizes.

Create A Consistent Growing Environment in Your Greenhouse

Automated aluminum louver Exaco Modern greenhouse vent for temperature and humidity control.

Intake Shutter Vent

The Intake Shutter Vent, used with an Exhaust Fan, controls airflow in the greenhouse and is available in 16", 20", and 24" sizes.

Exaco

Solar Powered Exhaust Fan

Exaco's Solar Powered Exhaust Fan offers greenhouse ventilation without electricity and includes a lifetime warranty on the brushless motor.

Exaco Exhaust Fan in white background

Exhaust Vent with Fan

Available in 12", 16", and 20" sizes, circulates air to optimize growing conditions and comes with a 110-volt cord, plug, and an optional thermostat.

Exaco RIGA Portable Milkhouse Heater product image

Uline Milkhouse Heater

Compact 1500W heater with 3 settings, adjustable thermostat (50–90°F), and 6-ft cord.

Close-up of Exaco INKBIRD ITC-608T thermostat with dual probes.

Inkbird Thermostat

Inkbird ITC-608T thermostat with dual probes controls 2 heating/cooling devices separately. Plug-and-play, 120V/15A/1800W, range -40°F–212°F.

Red box infrared portable industrial heater for Exaco Greenhouses

Industrial Heater

Keep large greenhouses cozy with this industrial infrared heater. It provides 18,500 BTU and features fan and thermostat controls for consistent warmth.

Expand Your Greenhouse's Capabilities with Specialized Add-Ons

Close up of Exaco Riga greenhouse vent with spindle opener

Additional Roof Vent

The RIGA Automatic Window Opener features a quick-release arm for easy disconnection during bad weather.

Detailed view of a spindle window opener for Exaco greenhouses, featuring diagrams and close-up images of its components including tension springs and adjustment mechanisms

Spindle Roof Opener

Manual roof window opener that works like a large threaded screw. Long handle is needed to operate, not included.

Close up of sash lock for Exaco Greenhouses

Sash Lock

Recommended to shut roof windows in winter and stormy weather. Also used to shut top half door.

A close-up of a metal cable wind restraint system securing a greenhouse roof window.

Roof Window Restraints

The roof window restraint kit uses two 15-inch stainless steel cables with nuts and bolts to protect auto-openers from strong winds.

Maximize Space and Accessibility in Your RIGA Greenhouse

Close up image of the Exaco RIGA greenhouse top shelf with support

Top Shelf

Show off your plant babies with a 10" wide top shelf. Price and length varies per size.

Top and bottom shelves for Exaco Riga greenhouses with plants on display

Bottom Shelf

Store your tools on a 25" wide bottom shelf. Price and length varies per size.

A drop door kit for Exaco RIGA Greenhouse

Drop Door Extension Kit

To raise greenhouse 20” when placed on stem wall. Sizes vary per greenhouse model.

From Foundation to Roof — Essential Miscellaneous Add-Ons

Close up image of a foundation frame for Exaco Riga Greenhouses

RIGA Foundation Frame

The foundation frame for Riga Greenhouses can be installed in a trench without concrete and is available in various sizes and prices per model.

Stainless Steel Plant Hooks for Exaco Greenhouses

Metal Hooks

T-bolts easily insert into greenhouse profile channels and come in a set of 5 with adjustable length hooks.

Close up of sash lock for Exaco Greenhouses

Plastic Hooks for Growing

The kit for vining plants includes 10 plastic inserts, hooks, and a small stainless steel S-hook, and installs easily in greenhouse channels.

An image of the misting system that comes standard with some models of the Exaco Victorian Greenhouses.

Misting System

Suitable for greenhouses up to 20 feet, features 5 adjustable misters. Easily customize the water flow and shorten the kit as needed.

Product image of the solar light for Exaco Greenhouses

Solar Light

Eco-friendly solar LED light for greenhouses/sheds. 250 lumens, 4 hrs runtime, cool white 6000K. Easy install, weather-resistant, 2-yr warranty. Not a grow light. 

Exaco Astrica Grow Light LED fixture designed for greenhouse use, providing full-spectrum lighting in a slim, energy-efficient housing.

Astrica Grow Light

ASTRICA 45W Interlight LED, F3 spectrum, 112 ÎĽmol/s, 2.5 ÎĽmol/J. IP65 build, link up to 12 units. Note: stringing units together requires different cables.

Installation set for vining plants in a greenhouse, featuring 10 plastic inserts, hooks, and a stainless steel S-hook

Wheelbarrow Ramp

The solid rubber greenhouse ramp facilitates easy wheelbarrow access and measures 49cm wide by 31cm long by 10cm high.

Stainless steel hammerhead bolts and nuts for attaching accessories to aluminum frames, available in 12mm (Victorian) or 15mm (RIGA) lengths. Set includes 20 bolts and nuts.

T-Bolts

Stainless steel hammerhead bolts and nuts for attaching accessories to aluminum frames, available in 12mm (Victorian) or 15mm (RIGA) lengths. Set includes 20 bolts and nuts.

RIGA Greenhouse Overview and Installation Steps Videos

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