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Halls Supreme 812 Green 8' x 12' Glass Greenhouse

The forest green powder coat applied to this Halls Supreme 812 Green Aluminium & H-Glass 8' x 12' Greenhouse looks stunning and also provides an ex...more

The forest green powder coat applied to this Halls Supreme 812 Green 8' x 12' Glass Greenhouse looks sublime and also provides an extra layer of protection. The curved eaves, also glazed in 3mm horticultural glass, are what set this halls supreme greenhouse apart from the rest.

There are also many optional extras to consider with this garden greenhouse from the drop down menus to enhance your greenhouse garden building. We also sell the Halls Supreme 812 Green 8' x 12' Glass Greenhouse in other sizes and in a choice of two frame finishes - silver & green.

** FREE TWO TIER STAGING ** (Worth up to £94!)

With any Halls greenhouse purchased during September - November
(Staging will be colour matched to selected greenhouse) 

Halls Supreme 812 Green 8' x 12' Glass Greenhouse Dimenmsions:

  • Length: 3.83m
  • Width: 2.55m
  • Eaves Height: 1.24m
  • Ridge Height: 2.12m
  • Growing Area: 9.8m²
  • Door Opening: 1200mm
  • Roof Vents: 2
  • Glazing: British standard class 6206 long pane single sheet toughened glass

Halls Supreme 812 Green 8' x 12' Glass Greenhouse Features:

  • Extra safe toughened glass glazing
  • Powder coat painted forest green
  • Wide double doors for easier access
  • Spectacular curved eaves
  • Easy clip-in glazing
  • Smooth single sliding door
  • Integral roof ventilation
  • 15 Year Manufacturers Guarantee

Additional Options: (please select these from the drop down menu/s) We will be happy to provide you any further information upon request in relation to these greenhouse options:

  1. Base - As pictured in the main image
  2. Installation - *Please see below
  3. Staging - Aluminium, potting benches, wire trays, aluminium shelving, seed trays and luxury staging
  4. Louvre - Bladed, glass or poly glazed
  5. Roof Vent - 6' & 8' available
  6. Window Opener - Manual and auto
  7. Down Pipes -  6' & 8' rainwater kits are available
  8. Shading/insulation - 8ft & 12ft shading screens
  9. Greenhouse Heater - Junior, senior or maxi heating
  10. Coldframe - 4x2 or 4x3 in Horticultural, toughened or polypropelene glazing options
  11. Watering System - Vanlet automatic irrigation unit


Delivery Notes:

  1. All Orders will be Delivered within 21 - 28 Days from receipt of order
  2. All customers will be contacted 48 hours prior to delivery to provide AM / PM delivery date
  3. Delivery charges to all other Offshore and Scottish Islands locations require individual quotes (please call customer services before ordering)


  • Installation completed within 10 working days from delivery of greenhouse
  • Ensure ground location is of firm and level footing with any additional materials being pre-laid in readiness (example Paving Slabs etc.)
  • Area prepared should be free from any obstruction (example Manhole covers etc.)
  • Area should be free from overhanging obstacles (example Tree branches, Power lines etc.)
  • The area should allow the building to be installed providing access to all sides
  • Please ensure you have pre-checked your garden building 72hrs before your installation reporting any problems to our Customer Services 
  • Any additional accessories to be installed at the same time will be chargeable at a rate of £24.95 inclusive of VAT. If you wish to to have a lot of accessories installed? Please call our customer services department who will be able to give you a tailored quote.

IMPORTANT NOTICE: Customers should report any problems relating to the product within 24 hours from receipt to our customer service department.

delivery van
Usually 21 - 28 working days
Total Price
£1,169.10 £1,299.00 Save £129.90
Seen it cheaper? We'd love for you to call or email us so we can try and beat it for you.
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delivery van
Usually 21 - 28 working days
Optional Extras

18" Green Tough Glass

£74.99 each


24" Green Tough Glass

£108.90 each


18" Green Poly

£74.99 each


Autolouvre Control

£31.99 each


Ventomatic Unit

£41.58 each

8ft - 250cm Shade Screen

8ft - 250cm Shade Screen

£44.65 each

12ft - 370cm Shade Screen

12ft - 370cm Shade Screen

£50.65 each



£32.92 each



£47.90 each



£57.91 each


4x2 Horticultural Glass

£81.69 each


4x2 Toughened Glass

£106.69 each


Jumbo Horticultural Glass

£102.70 each


Jumbo Toughened Glass

£146.70 each


3x2 Polypropylene (Single)

£52.91 each


4x3 Polypropylene (Double)

£77.91 each


Silver Base

£139.99 each


Green Base

£209.99 each

2 Tier Green Staging

2 Tier Green Staging

£94.39 each


Vanlet Auto Irrigation Unit

£92.92 each

Installation Please

Installation Please

£449.00 each


8ft Wide Silver

£29.99 each

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