Product Description

A Winter Haven for Thriving Plants with Riga 3s Greenhouse

Looking to grow your own fresh veggies, herbs, and flowers all year round? The Hoklartherm Riga 3S Greenhouse is the perfect space for your green thumb to flourish. This 81 square foot greenhouse is built to last with a super strong frame and top-notch insulation, keeping your plants cozy even in the coldest weather.

Don't let limited space hold you back from your gardening goals. The Riga 3S is compact enough to fit in most backyards, yet spacious enough to grow a wide variety of plants.

Riga Greenhouses 3S (81 sq.ft.) closed door

Ensure the Survival and Thriving of Delicate Crops with a 3s Greenhouse

  • Year-Round Design: European-engineered with sloped walls that maximize sunlight, shed snow, and withstand strong winds.
  • Superior Insulation: 8mm twin-wall polycarbonate side panels and 10mm gable ends provide excellent thermal efficiency for winter gardening.
  • Durable Build: Reinforced 13-gauge aluminum frame with stainless steel hardware ensures long-lasting strength and rust resistance.
  • Smart Functionality: Includes a barn-style hinged door with lock, plus an automatic roof vent and rear window for secure, well-ventilated growing.
  • Compact & Reliable: 81 sq. ft. footprint fits smaller yards, backed by a 10-year panel warranty and 15-year frame warranty.

Don't wait any longer to create your own backyard oasis. Order your Riga 3S Greenhouse today and start enjoying the benefits of year-round gardening.

Exaco Riga Greenhouses 3S (81 sq.ft.) in the woods

Why Choose RIGA?

German Engineering & Materials Designed in Germany with superior German-made polycarbonate glazing and stainless steel hardware that resists rust and corrosion.
Durable Construction Reinforced aluminum frame with interlocking profiles that stay secure under wind pressure, ensuring long-lasting strength.
Foundation Option An optional 6" high base frame can be buried for secure anchoring, offering a simpler alternative to concrete foundations.
Optimal Insulation Glazing thickness and design provide reliable year-round insulation, keeping plants safe through winter while avoiding excess heating costs.
Versatile & Expandable Available in multiple sizes, with optional shelving systems and accessories to adapt for different plants and future gardening needs.
Exaco Riga Greenhouses 3S opened door

Specifications of Riga 3S Greenhouse

Dimensions (W x L x H) 7'8" x 10'6" x 7'1"
Square Footage 81 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 13 gauge aluminum extrusions
Glazing 8mm twin-wall polycarbonate (side walls) / 10mm twin wall polycarbonate (gable ends)
Hoklartherm Riga Greenhouses 3S carried by people


Create Your Ideal Greenhouse Setup with This Discounted Package

Get the most out of your greenhouse with our discounted package, designed to make your gardening experience more efficient and enjoyable. The package includes a top shelf for your most-used items, a bottom shelf for storage, and a foundation frame to create a sturdy base for your greenhouse. This is your chance to create a well-organized and productive growing space.

Exaco RIGA Top Shelf and bottom shelf product image

Top Shelf & Bottom Shelf

The top shelf offers extra growing space for smaller plants or seedlings, measuring 10" in width. Meanwhile, the bottom shelf provides storage for gardening tools, pots, and supplies, with a generous 25" width. Shelf length varies based on the specific greenhouse size, and pricing is greenhouse-dependent.

Exaco RIGA Foundation Frame base

RIGA Foundation Frame

Constructed for stability, our foundation frame ensures a level base for your greenhouse, even on uneven terrain.


Elevate Your Greenhouse: Explore Optional Add-Ons

Exaco Exhaust Fan in white background

Exhaust Vent with Fan

Opt for sizes of 12", 16", or 20", connect the 110-volt cord, and enhance temperature control by adding the optional thermostat with an 8-foot cord. 

Solar exhaust fan from Exaco for Riga s Greenhouses

Exaco Solar Exhaust Fan

Solar exhaust fan kit with 50W panel, 16" CE fan, thermostat & 20ft cord. Brushless motor with lifetime warranty.

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

Intake Shutter Vent

Automate your greenhouse ventilation with aluminum louver vents in 16", 20", or 24" sizes for precise climate control.

Exaco RIGA Portable Milkhouse Heater product imageExaco RIGA Portable Milkhouse Heater product image

Uline Milkhouse Heater

Delivers 4,437–5,120 BTU with sturdy metal housing, 6’ power cord, and built-in auto shut-off to ensure safe, dependable heating for your plants in cold weather.

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.


Expand Greenhouse With Door and Window Add-on Kits

Exaco RIGA Door Extension Kit product image

Drop Door Kit - Hinged Doors / Sliding Doors

Optimize your Riga greenhouse airflow with our 20-inch riser designed for stem walls.

Exaco RIGA Automatic Window Opener used

Automatic Window Opener

Automatic roof vent opener for Riga greenhouses with quick-release arm for added protection. (Replacement pistons sold separately.)

Exaco Royal Victorian Spindle Roof Window Opener Manual

Spindle Roof Window Opener

Enhance your greenhouse ventilation with this stainless steel threaded screw window opener. (Note: Requires long handle, not included.)

Exaco greenhouse

Roof Window Restraints

Secure your greenhouse's automatic roof openers with this wind restraint kit featuring two 15-inch stainless steel cables per window.

Black plastic sash lock securing the door of an aluminum greenhouse.

Sash Lock

Easily close and secure roof windows and top door halves during winter or storms with this tool, protecting your plants.


Create the Ideal Greenhouse Environment With These Accessories

Exaco Misting System product image

Misting / Watering System

Cool and water your 20-foot greenhouse with this customizable 14-foot misting system featuring 5 adjustable misting heads. Plus, it’s easily cut to fit your specific greenhouse dimensions.

A solar-powered LED light mounted on a white wall.

Solar Powered 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.

Exaco Greenhouse Wheelbarrow Ramp for convenient greenhouse access.

Wheelbarrow Ramp

Effortlessly move items in and out of your greenhouse with this durable, solid rubber ramp (49cm wide, 31cm long, 10cm high).

 A pile of stainless steel T-bolts and nuts for greenhouse assembly.

T-Bolts

Securely fasten shelves and accessories in your aluminum greenhouse with 20 stainless steel bolts and nuts. Simply slide the 6mm bolts into the channels, twist to lock, and select the appropriate length/

Stainless Steel Plant Hooks for Exaco Greenhouses

Stainless Steel Plant Hooks

Easily hang plants or accessories in your greenhouse with this 5-hook set. The T-bolt design slides smoothly into frame channels and offers adjustable height for versatile placement.

Riga greenhouse ceiling with plastic hooks installed in the frame channel, supporting ropes for vining plants.

Plastic Hooks for Growing

Create a vertical garden in your greenhouse with this convenient channel insert and hook set. Includes 10 plastic inserts, hooks, and stainless steel S-hooks to easily support vining plants.


Introduction to the RIGA 's' Greenhouse

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