Skip to content
We Help Homeowners Make A Neighbor Jealous With ✓ FREE Shipping ✓ Lowest Prices ✓ Exceptional Reviews
We Help Homeowners Make A Neighbor Jealous With ✓ FREE Shipping ✓ Lowest Prices ✓ Exceptional Reviews
Expert Support

Call (725)-239-9966 for special pricing.

2,000+ Happy Customers & Jealous Neighbors
500+ 5 Star Reviews
Free Shipping

On Orders Over $200!

Hoklartherm Riga Greenhouses 4S (108 sq.ft.)

by Exaco
Sale Sale
Original price $8,000.00
Original price $8,000.00 - Original price $8,000.00
Original price $8,000.00
Current price $5,120.00
$5,120.00 - $5,120.00
Current price $5,120.00

✓ Exaco Preferred Dealer & 15 Year Standard Warranty
✓ Massive Customization Options, Call Us Today For Your Own Representative
✓ Premium Glass & Metal Frame Prevents Replacing Cheap Greenhouses Every Year

Safe and Secure Checkout Badge
Why Buy From Us?

Fast Response & Service Times & FREE Shipping: You will always reach a real person.

Real, Friendly, Expert Staff Trusted By Thousands of Home Owners and Contractors!

Price Match Guarantee Ensures You'll Receive The Best Deal Online Even After Your Purchase.

Authorized Retailer For All Brands: Only new warrantied equipment for peace of mind.

Shipping & Handling For Exaco

Handling Time: Ships in 5 to 9 business days. Custom items may take longer.

Shipping Time: Please allow 2-9 business days for delivery to your curbside.

Our goal is to get your order to you as quickly as possible. This item ships to all States of the contiguous U.S.A (lower 48). Please note that all shipments over 100lbs go by LTL freight. For more information check out our Shipping Policy.

Cancellation/Return Policy For Exaco

Return Policy: Exaco generally does not accept returns as everything is built to order. Exceptions apply.

Any order can be canceled within 24 hours of payment.

After 24 hours, most orders will be packed and placed for pickup by the shipping carriers. Once picked up, the item will be considered shipped.

Custom, Built-To-Order, on demand products cannot be canceled or refunded after 24 hours, as these products are put into production specifically for your order. 

Damaged Items:

All orders are protected by the manufacturer's warranty. We will repair, or replace any item damaged during shipment or faulty upon arrival as long as the documentation is provided.

Support Agent

Questions? We Are Here To Help!

Call Us Now:  725-239-9966
Instant Live Chat:  Click to Chat
Mon-Fri: 8am-7pm PST

Indulge in Unmatched Year-Round Gardening with the Hoklartherm RIGA Greenhouse

Looking for a top-quality greenhouse that'll make your gardening dreams come true? The Riga Greenhouse 4S might just be your perfect match. Imagine stepping into your own personal garden oasis, filled with lush greenery and vibrant blooms, right in your backyard.

Its clever design is like a cozy blanket for your plants, keeping them warm in winter and cool in summer. So no matter what the weather's doing outside, your plants will be living their best life. Whether you're a gardening whiz or just starting out, you'll be surprised by how much you can grow with this greenhouse. From fresh veggies in the dead of winter to starting your own seeds for a spring garden, the Riga Greenhouse 4S opens up a whole new world of gardening fun.

Riga Greenhouses with a person outside with a fresh produce of vegetables.

Allow for the Cultivation of a Wider Variety of Plant Species

  • Year-Round Gardening Paradise: Ideal for cultivating fresh vegetables, herbs, and flowers in any season.
  • Exceptional Insulation: Thick twin-wall polycarbonate panels keep the interior warm in winter and cool in summer.
  • Breathable Design: Multiple roof and wall vents with automatic openers create the perfect growing environment.
  • Expert Craftsmanship: Built by a renowned German greenhouse manufacturer, ensuring quality and durability.
  • Customizable Shelving: Add optional shelves with adjustable inserts to maximize your growing space.
  • Easy Foundation: Securely anchor your greenhouse without pouring concrete, thanks to an optional foundation frame.
  • Elegant Addition: Enhances the beauty of your garden with its modern design and clean lines.
  • Lifetime Investment: Enjoy years of gardening pleasure with this high-quality, long-lasting greenhouse.

Don't let the weather dictate your gardening plans. Get ready to experience the joy of gardening all year round. Order your Riga Greenhouse 4S today and start growing your dreams!

Hoklartherm Greenhouses 4S in the woods

Why Choose RIGA?

Manufacturing Origin Designed, engineered, and manufactured in Germany by Hoklartherm, a renowned manufacturer with 28 years of experience in commercial and hobby greenhouses.
Strength and Durability Recognized as the strongest greenhouse under $5,000, the Riga Greenhouse boasts strong materials and durable hardware, ensuring longevity and robustness.
Ventilation Excellence Larger, aOffering superior window and door ventilation compared to other units, the Riga Greenhouse stands in a class of its own.thicker, and stronger than competitors in this price range.
German-Made Glazing The polycarbonate glazing is sourced from Germany, known for its superior quality, surpassing common options like Polygal or GE glazing.
Adaptable Shelving System An optional two-layer shelving system with removable inserts accommodates tall plants, providing flexibility for diverse gardening needs.
An optional two-layer shelving system with removable inserts accommodates tall plants, providing flexibility for diverse gardening needs. The optional 6" high foundation frame can be buried to anchor the greenhouse securely, offering an alternative to traditional methods like concrete.
Permanent Frame Attachment A key advantage lies in Riga's construction method, with frame profiles permanently attached, preventing loosening over time due to wind pressures.
Hoklartherm Greenhouses inside view

German Engineering Assurance Backed by German engineering, the Riga Greenhouse ensures top-quality craftsmanship and design.
Versatile Shelving Options Optional shelving, including a Seedtray/Bench shelf and top shelf with strong diagonal support, offers adaptability for various plant sizes and uses.
Aesthetically Pleasing The Riga Greenhouse adds an attractive touch to upscale garden settings, combining functionality with visual appeal.
Class-Leading Quality Similar to a Volkswagen/Volvo in the car world, the Riga Greenhouse stands out for its strength, durability, insulation, and additional features, surpassing other popular brands.
Optimal Insulation Balancing cost and functionality, the Riga Greenhouse provides the minimum insulation required for year-round plant growth, avoiding excessive heating expenses.
Various Size Options Available in five sizes, allowing flexibility in choosing the right fit for individual gardening needs.
Proactive Sizing Recommendation Recommends purchasing one size larger than initially planned, providing foresight for potential future needs and expansion.
Hoklartherm Riga Greenhouses 4 opened door

Specifications of Riga 4S Greenhouse

Dimensions (W x L x H) 7'8" x 14' x 7'1"
Square Footage 108 sq. ft
Doors 1 Barn Style Hinged Door w/Lock
Door Size 30" W x 72" H
Windows 1 Roof Vent, 1 Rear Window
Window Openers 1 Automatic (Roof)
Window Size 3'5" x 2'1"
Frame 17 gauge tubular aluminum extrusions
Glazing 8mm twin-wall polycarbonate (side walls) / 10mm twin wall polycarbonate (gable ends)
Riga Greenhouse with man on top

Finish Setting Up Your Greenhouse with This Bundle Package

Enhance your RIGA Greenhouse 4S experience with this discounted bundle package, complete with top and bottom shelves for organized gardening and a sturdy foundation frame for added security. It's everything you need to maximize your growing potential and create a thriving greenhouse environment.

Exaco RIGA Top Shelf and bottom shelf product image

Top Shelf & Bottom Shelf

A top shelf, measuring a convenient 10" wide, provides a dedicated space for your smaller plants and seedlings to flourish. Meanwhile, a wider bottom shelf, at 25", offers plenty of room for your gardening tools, pots, and supplies. Shelf length and pricing will depend on the specific greenhouse size you choose.

Exaco RIGA Foundation Frame base

RIGA Foundation Frame

With the foundation frame, your greenhouse will remain stable and have a level base, regardless of any unevenness in the ground.

Optimize Your System and Environment with These Optional Add-Ons

Select one of the three options: 12", 16", or 20" dimensions. Attach the 110-volt cable, and for convenient temperature adjustment, include the extra thermostat that comes with an 8-foot extension cord. Enhance precision by combining the portable 1500-watt heater, which has a built-in thermostat (0-90°F), with the Thermo2 digital thermostat. The state-of-the-art digital thermostat showcases both Fahrenheit and Celsius readings, effortlessly managing 1500W/5200 BTU. With an impressive operating range from -58°F to 108°F, this exquisite device offers summer and winter modes, perfectly complementing the luxurious Palma heater. Upgrade your greenhouse with the solar-powered exhaust fan kit! Includes a 50-watt solar panel, 16" CE-approved fan, thermostat, and 20-foot cord. Runs on solar power, no batteries needed. Lifetime warranty on the brushless motor for peace of mind. We offer automated aluminum louver greenhouse vents in three different sizes: 16", 20", and 24". These vents are designed to provide precise control over temperature and humidity levels in your greenhouse.

Let the Sunshine In: Upgrade Your Greenhouse with Door & Window Kits

Tailored greenhouse riser made for RIGA 2s, 3s, or 4s. Install on a stem wall to raise your greenhouse by 20 inches, improving air circulation and enhancing plant growth conditions. Created for RIGA models 2s, 3s, 3, 4s, 4, and 5. The opener has a fast-release arm for simple disconnection in bad weather, keeping your investment safe. (Replacement pistons are available for purchase separately). The basic opener works similar to a screw, letting you change the window for better air circulation. The stainless steel coating makes it strong and stylish. (Please note that you need a long handle to use it, which is sold separately.) Keep your greenhouse's automatic roof openers safe from powerful winds by using this kit. It comes with two 15-inch stainless steel cables, along with nuts and bolts for each window. Created for roof windows and upper door halves, this useful device helps you close and lock these openings in severe winter conditions or storms, keeping your plants safe and healthy.

Secure Support for Bountiful Harvests With These Accessories

This misting system is 14 feet long and is made for a 20-foot greenhouse. It has 5 misting heads that can be adjusted for more water or a cooling mist. Plus, it can be easily cut to fit your greenhouse size This durable rubber ramp, 49cm wide, 31cm long, and 10cm high, makes it simple to move things in and out of your greenhouse. Easily fasten shelves and accessories in your greenhouse with 20 stainless steel bolts and nuts. Insert the 6mm bolts into the channels, turn to secure 15mm for RIGA models. Utilize the sun's energy with this solar-powered LED light, specially created to illuminate greenhouses during the night! Select either corded or cordless options and link up to 15 units for spacious growing spaces. This 4-foot LED grow light bar has the F3 spectrum and 12 waterproof LEDs, promoting strong plant growth. It has a sturdy build and a 5-year warranty. This 5-hook set is perfect for your greenhouse. Hang plants or accessories with ease using the T-bolt head that smoothly slides into frame channels. You can also adjust the height for added convenience. Improve your greenhouse by adding our channel inserts and hooks. They can be easily set up to support wire or rope for climbing plants. Each pack contains 10 plastic inserts and hooks, as well as a small stainless steel S-hook.

Introduction to the RIGA 's' Greenhouse

    Compare products

    {"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

    Select first item to compare

    Select second item to compare

    Select third item to compare