• The YMX-03 cold frame features a taller lid for seedlings and vertical crops. Choose 4 mm or 6 mm polycarbonate, both UV-stabilized, on a reinforced aluminum frame — a sturdy, small-footprint alternative to a mini greenhouse. Tall opening—extra headroom for tomatoes, peppers, and starter trays. Optional 6 mm polycarbonate for improved insulation. Reinforced frame designed for wind and light snow conditions. DIY assembly—~20–30 minutes for two people. Excellent season extension for cooler reg
1 1

YMX-03 Cold Frame — Tall Lid for Seedlings & Vertical Growth

YMX-03 Cold Frame — Tall Lid for Seedlings & Vertical Growth

$0.00 CAD
$0.00 CAD
Sale Sold out
Shipping calculated at checkout.
Canada-only shipping Vancouver pickup 1–2 business days dispatch

Member price in our Facebook group: CAD 189 (store price CAD 199).Join our group to unlock member pricing & Saturday pickup discount.

YMX-03 Tall Cold Frame for Deep Raised Beds

A taller cold frame for deep raised beds and crops that need more headroom. Give kale, chard, peppers, and other taller plants a protected space to keep growing through shoulder seasons.

  • Extra height for tall crops: plenty of vertical space for leafy greens and fruiting plants.
  • Deep-bed friendly: made for deeper raised beds and large containers.
  • Adjustable ventilation: prop the lid open to control airflow on sunny days.
  • Durable season-extension kit: aluminum frame and polycarbonate panels built for Canadian backyards.
View full details

trust banner

  • Column

  • Column

  • Column

3 ways to buy

  • Buy online: Checkout here and ship anywhere in Canada.
  • Join our Facebook group: Unlock member pricing and bundle deals.
  • Warehouse open day: See the kits in person and pick up in Vancouver on Saturdays.

Join Facebook group  ·  Book warehouse open day

Reviews

Share information about your brand with your customers. Describe a product, make announcements, or welcome customers to your store.

YMX-03 tall cold frame on a deep raised bed
Extra height

Give taller crops room to grow under cover

YMX-03 is a tall cold frame for deeper raised beds and crops that quickly outgrow low covers. It adds vertical space so kale, chard, peppers, and other taller plants can keep growing through cool nights.

Ideal for gardeners who want to protect more than just seedlings in spring and fall.

YMX-03 lid propped open for airflow
Deep beds & airflow

Built for deep raised beds with adjustable venting

Designed to sit on deeper beds and containers, the taller profile gives roots plenty of depth and foliage plenty of headroom, while the lid can be propped open to vent heat on sunny days.

A practical way to create a stable, well-ventilated microclimate over your main bed.

Specs

Best for Deep raised beds and taller crops (kale, chard, peppers, etc.)
Frame Aluminum, taller profile for extra headroom
Panels UV-stabilized polycarbonate
Height Taller than standard low cold frames, sized for leafy and mid-height crops
Access & venting Lift-up lid that can be propped open for airflow control
Assembly Approx. 20–30 minutes with basic tools

Canada-only shipping. Local pickup: Vancouver.

FAQ

Will it handle wind and snow?

Panels are UV-stabilized PC and the frame is aluminum. Keep the lid closed in storms and clear heavy snow promptly.

How do I anchor it?

Use the included hardware; for windy sites, add garden stakes or fasten to a wooden raised bed frame.

What’s the difference between 4 mm and 6 mm?

6 mm insulates better and resists impact; 4 mm is lighter and more compact.

Frequently bought together

30-day returns on unopened items. Limited warranty covers manufacturing defects.
Need help with sizing or installation? Contact us — we can help you pick the right setup.