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8'6 x 12’8 Halls Magnum 812 Greenhouse (2.57 x 3.84m)
Product code:
SHS17476
Special Price
£1,313.00
Regular Price
£1,459.00
If you are a gardening enthusiast, this 8x12 greenhouse is a large greenhouse with an aluminium frame, generous headroom and full of features sure to please any keen gardener.
- 12 year frame guarantee
- Low-maintenance aluminium frame with cast iron bolts and reinforcements
- Smooth-action double sliding doors, 4 roof vents and integral gutters
- Easy to install glazing with optional upgrades to toughened glass or polycarbonate
- Base area of 9.9m2
- Personalise with optional accessories, staging and a base
- 3. Optional Extras
- Base Option
-
8x12 Magnum Mill Base
+£169.99x8x12 Magnum Mill Base -
£169.99 - Glazing Options
-
Toughened Safety Glass (8x12)
+£324.99xToughened Safety Glass (8x12) -
£324.99 -
8x12 Magnum Polycarbonate Glazing
+£424.99x8x12 Magnum Polycarbonate Glazing -
£424.99 - Accessories
-
Louvre Vent (toughened) - Natural
+£60.99xLouvre Vent (toughened) - Natural -
£60.99 -
Louvre Vent (polycarbonate) - Natural
+£60.99xLouvre Vent (polycarbonate) - Natural -
£60.99 -
Louvrematic Auto-Opener
+£49.99xLouvrematic Auto-Opener -
£49.99 -
Auto-Opener for Vent
+£49.99xAuto-Opener for Vent -
£49.99 -
Aluminium Staging 1 Tier - Natural
+£60.99xAluminium Staging 1 Tier - Natural -
£60.99 -
Potting Bench
+£70.99xPotting Bench -
£70.99 -
Seed Tray 3 Tier (15 Trays)
+£70.99xSeed Tray 3 Tier (15 Trays) -
£70.99The 3 Tier Seed Tray Frame from Halls Greenhouses is brilliant purpose-built greenhouse staging that will maximise the gardening space in any greenhouse. This frame allows for easy care of seedlings and any small plants that need nurturing during the gardening year.
This specialised greenhouse shelving will hold 15 standard seed trays - 15 trays are already included with the frame for immediate use.
The seed tray frame is built from rust-resistant aluminium and makes the ideal accessory for any greenhouse.
-
Greenhouse Paraffin Heater
+£79.99xGreenhouse Paraffin Heater -
£79.99 -
x
Lifestyle Santorini Flame Gas Patio Heater -
£579.99Perfect for both householders and the hospitality industry, the Lifestyle Santorini Flame Gas Patio Heater sports a unique cylindrical design, which provides a stunning 360o visual effect and a powerful source of instant, portable heat in the garden.
This sensational outdoor heater’s central flame is cleverly manipulated so that it spirals upwards, beautifully complementing the 11kw maximum heat output. The flame is surrounded by a Pyrex glass tube, protected by a tough metal mesh, whilst the steel housing enjoys a fashionable gunmetal-grey finish, so ensuring a robust, durable heater, with an incredibly stylish appearance.
Fitted with wheels to ensure easy manoeuvrability, and retractable for simple storage, this CE-approved garden heater measures 1763mm x 523mm diameter (1260mm x 523mm once retracted) and comes with a reassuring 1-year guarantee.
Supplied preassembled, and including a hose and propane regulator, this patio gas heater can be enjoyed straight out of the box by simply attaching the snap on connector to a propane or butane gas cylinder.
**This garden heater takes a 13kg propane LPG cylinder or 15kg butane LPG cylinder, which is not included. The heater must only be used outdoors or in amply ventilated areas (an area with at least 25% of the surface area open). **
A tailormade, weatherproof cover is available as an optional extra.
Delivery is free to most UK addresses.
- Unique cylindrical shape and spiralling flame
- 11kw maximum heat output
- Pyrex glass tube protected by metal mesh
- Steel housing with gunmetal-grey finish
- Hose and propane regulator included
- Comes preassembled
- Retractable for simple storage
- Wheels for easy manoeuvrability
- 1-year guarantee
- Free delivery to most UK addresses
- Accessories
- Specification
- Description
- Trustpilot Reviews
- Delivery
Specification

Assembly Time (estimated) | 4-6 hours |
---|---|
Brand | Halls |
Door Type | Double Doors |
Door Width | 1200 |
Eaves Height | 1510 |
Floor Material | None |
Frame Type | Aluminium |
Size | 8' x 12' |
Guarantee | 12 years |
Opening Windows | 4 windows |
Overall Depth | 3840 |
Overall Height | 2580 |
Overall Width | 2570 |
Persons to Assemble | 2 people |
Ridge Height | 2580 |
Roof Style | Apex |
Description
A greenhouse for keen gardeners, the 8x12 Magnum Greenhouse from Halls Greenhouses boasts a variety of features sure to please any gardening enthusiast.
This large greenhouse is designed to offer generous headroom to make working in your greenhouse a pleasure. You can personalise the interior space by upgrading with optional greenhouse staging. This includes 1- or 2- tier aluminium staging with slatted shelves; a 3-tier seed tray frame staging which will hold 15 seed trays; and a 2-tier potting bench.
The wide smooth-action, sliding double doors offer easy access with wheelbarrows and planters. The greenhouse comes with 4 roof vents and we offer optional extras designed to allow you to create the optimum growing conditions for your plants: an auto vent opener, a louvre window, and an auto louvre control. You can also opt for a greenhouse heater.
As standard, this greenhouse is glazed with 3mm horticultural glass. We do recommend upgrading this for better performance and safety. You can choose to upgrade to long panel toughened safety glass or to 4mm twinwall UV stabilised insulating polycarbonate. Whichever option you choose, they are all easy to install with clips and rubber gaskets.
Robust, durable and rust-resistant, the aluminium frame is further strengthened by diagonal bracing, cast iron bolts and reinforcing brackets. All of the Magnum range from Halls Greenhouses feature generous 1.51m eaves and 2.58m ridge height, and are 2.57m wide. This 8x12 greenhouse is 3.84m deep and offers a base area of 9.9m2.
The frame of this greenhouse is guaranteed for 12 years. It is essential that all greenhouses are placed on a firm level surface. For increased stability, we recommend the optional greenhouse base designed for Halls’ greenhouses.
This superb garden greenhouse is available in three sizes (8x10, 8x12 and 8x14) and each size is available in standard silver or with a green powder-coated finish. You are sure to find the right greenhouse for your gardening and grow your own requirements.
- 12 year frame guarantee
- Manufactured by best-selling greenhouse manufacturer Halls Greenhouses
- Robust, low-maintenance aluminium frame with diagonal bracing, cast iron bolts and reinforced brackets
- Optional upgrade from horticultural glass to toughened glass or polycarbonate
- Easy to install glazing via clips and rubber gaskets – all provided
- Smooth-action double sliding doors
- 4 roof vents
- Integral gutters
- Optional auto vent opener, louvre window, auto louvre controls and greenhouse heater
- Optional range of staging options
- Width x depth: 2.57m x 3.84m
- Eaves height: 1.51m
- Ridge height: 2.58m
- Base area: 9.9m2
Trustpilot Reviews
Delivery
We offer FREE Delivery to the majority of mainland postcodes, some offshore areas will incur an additional carriage charge (see below) and some postcode areas are not covered at all. Please use our postcode checker above or within checkout to check delivery is available to your area.
£99.99 - BT
£199.99 - GY, HS, IM, IV41-49 & 55-56, JE, KW15-17, PO30-41
Wherever we can, our drivers will deliver the product to the location on your property that you specify. It is important though that the drivers have suitable access and no restrictions for them to be able do this. We would not risk damaging your property whilst delivering a product to an un-safe location. Unfortunately we will not be able to go through your property.
All of our products are delivered flat packed, direct to your home and are supplied with a comprehensive set of instructions to help you get started.

Representative Example
- Purchase Rate 21.9% p.a. (variable)
- Representative 21.9% p.a. (variable)
- Assumed Credit Limit £1200