Browse
Green aluminum-framed greenhouse with clear glass panels, featuring plants and flowers inside, set on a grassy lawn.
8'6 x 12’8 Halls Magnum 812 Greenhouse (2.57 x 3.84m) - image 2

8'6 x 12’8 Halls Magnum 812 Greenhouse (2.57 x 3.84m)

by Halls

£1469.00from 3 retailers
GTIN05010697089009
EAN5010697089009
Prices updated 16 Mar 2026

Compare 3 Retailers

In stock5 Weeks
8 deals available
£1469.00
Best Price

Amazon

Check availability and price on Amazon.co.uk

Check on Amazon

Deals & Voucher Codes

View all
Buy Fencing Direct

Save an Extra 5% off Traditional fencing

Get Deal
Buy Sheds Direct

Save an extra 5% off Greenhouses and Grow your own Products

GROWING5
Shedstore

Save up to 25% off Premium Garden Buildings

Shedstore2d left
Get Deal
Buy Sheds Direct

Save £10 off any £350 orders

BSD10OFF
Buy Sheds Direct

Save £20 off any £550 orders

BSD20OFF

Product Description

The 8x12 Magnum Greenhouse from Halls is a large greenhouse ideal for keen gardeners. Its excellent range of features makes gardening and grow-your-own pursuits a pleasure. This garden greenhouse is constructed from long-lasting, low maintenance aluminium framing further strengthened by cast iron bolts, diagonal bracing and reinforcement brackets. As standard, this greenhouse is fitted with toughened safety glass, although you can upgrade to 4mm twinwall UV stabilised insulating polycarbonate, if desired. Whichever option you choose, it is easy to install with clips and rubber gaskets. Wide, smooth-action, double sliding doors provide easy access to the greenhouse while 4 roof vents allow control of interior conditions. Optional extras include an autovent openers for the windows, a louvre window, and an autolouvre control. All our Halls Magnum Greenhouses are 2.57m wide with a generous 1.51m eaves and 2.58m ridge height. This 8x12 greenhouse is 3.84m deep with a base area of 9.9m2. Optional extras include greenhouse staging to maximise space. Choose from 1- or 2-tier aluminium staging with slatted shelves, or opt for a purpose built 3-tier seed tray frame staging which will hold 15 seed trays. The always popular 2- tier potting bench and a greenhouse heater are also available. All greenhouses should be placed on a firm, level surface. Choose the optional greenhouse base designed for Halls' greenhouses for increased stability. This greenhouse is also available in an attractive green powder-coated finish and as an 8x10 or 8x14 model. Manufactured in the UK by Halls, a specialist greenhouse company Easy to install glazing with clips and rubber gaskets Toughened safety glass as standard Robust, low-maintenance aluminium frame with diagonal bracing, cast iron bolts and reinforcement brackets Smooth-running sliding door - 600mm door opening 4 roof vents Optional autovent opener, louvre window and autolouvre control Integral gutters Optional base available Choice of staging extras Width x depth: 2.57m x 3.84m Eaves height: 1.51m Ridge height: 2.58m Base area: 9.9m2

More products from Buy Sheds Direct

Browse their full range on Yorkshire.com