Grandio Ascent 8 Foot Wide

what are the clear panels made of

6 Mm twin-wall polycarbonate

How hail resistant is this structure?

It has a very good record of standing up to heavy hail

Was is the difference between basic and premium on the 8x12?

The premium comes with Automatic openers, Plant hangers, Trellis Kit, Drip kit, and cleaner

What type of base is needed to install this on? Can it be installed directly on ground or is some sort of crushed stone required?

This Greenhouse can be placed directly on the ground.Please contact customer service for more options.

i like the basic Grandio ascent model 8'x8' but I need another set of doors like the ones in this model that open in back as well so 2 sets of doors front and back if you have it what is cost

Yes there is a Backdoor option for the Grandio Greenhouses Please follow the link https://www.worldofgreenhouses.com/products/grandio-ascent-back-door-transformation-kit
  You can call our customer service at 732 806 7959 for all accessory options and prices
Thank you

How many roof vent windows come with the 8x16 model?

four

Is there a downspout kit that fits the gutter system?

Yes you can find it here
https://www.worldofgreenhouses.com/products/grandio-drain-kit?_pos=1&_sid=b175a1f44&_ss=r

Hi, Good evening, I am interested in buying one of your greenhouses but just wondering if you will be able to assemble it for me. I would really appreciate your help. Thanks, Valli

Sorry, we do not offer assembly. We recommend using a local handyman

How tall is it?

7'9" at the center and 4'6" at the side

Does the 8 x 12 Grandio Ascent premium come with extra snow load supports?

Yes it does

If I start with an 8' greenhouse, can I add another section later if needed?

Yes, we sell 4 foot extensions

what is the difference in an 8 sq premium green house and the basic green house? Are the walls and roof the same thickness? Does the wall window need to be ordered along with the greenhouse? Is the metal frame sold separately, or does it come with the green

The greenhouse is the same the premium comes with extra accessories. The wall and the roof are both 6mm. You do not need a wall window there are roof vents. The greenhouse comes standard in the green color. Please feel free to call us at 732 806 7959 with any questions

Can the rain gutters be used to direct the water runoff into a rain barrel?

Yes

What is the snow load rating for the roof?

There is no official snow load for this unit. We are very confident that it can stand up to large snow loads and comes standard with extra supports to withstand heavy snow.

How wind resistant is this?

The Grandio Greenhouse are very sturdy and do great in windy areas. For windy environments, we recommend using the frame to base brackets. please contact us for more information and the possibility of including them with your greenhouse.

Just received my greenhouse and cant for the life of me figure out how to attach 601A to the end of 619. Please can anyone help?

you are best off calling the manufacturers customer service line at 1-866-448-8231.