2570mm (8′ 5″)
3840mm (12′ 7″)
2580mm (8′ 5″)
1480mm (4′ 10″)
1200mm (3′ 11″) x 1820mm (5′ 11″) (aperture)
2570mm (8′ 5″) x 3840mm (12′ 7″)
The 8ft 5" wide Halls Magnum 8x12 with double doors is a great greenhouse for the keen gardener or allotment keeper with room for a larger greenhouse.
The Halls Magnum 8ft x 12ft Greenhouse will give you more than enough growing space to bring on seedlings as well as grow salad, herbs and vegetables all year round. The great thing about an 8ft wide greenhouse is the working space inside that means a couple of you can be toiling away potting up or plants without bumping into each other. The extra width also gives you more planting options such as using large raised beds or tubs for vine plants.
The Magnum is strengthened at the eaves and ridge by using cast iron joints as well as the actual ridge bar itself being constructed from thick box section. These strengthening features will keep the greenhouse rigid and square in strong winds.
Halls 6mm Twin Wall Polycarbonate is the ultimate glazing choice for safety. This is especially important in educational and public environments where children may be present and insurance may dictate that glass is not used. 6mm polycarbonate glazing gives the magnum the very best insulation and heat retention properties and is the glazing of choice in Europe above glass.
2570mm (8′ 5″)
3840mm (12′ 7″)
2580mm (8′ 5″)
1480mm (4′ 10″)
1200mm (3′ 11″) x 1820mm (5′ 11″) (aperture)
2570mm (8′ 5″) x 3840mm (12′ 7″)

A solid base is the backbone of any greenhouse. You might think skipping this step saves time, but trust me?I've seen plenty of greenhouses fail because of poor foundations. A dodgy base causes more headaches than you'd believe.
What happens with a bad base? Glass cracks. Doors jam. The structure twists. Water pools where it shouldn't. And fixing these problems costs way more than doing it right first time.

The best position for a greenhouse in the UK is south-facing with the ridge running east to west. Keep at least 2 metres from buildings and trees, on level ground with good drainage. A south-facing 6x8 greenhouse runs 3-5 degrees C warmer than the same model facing north.