Quality plus photo album SIZE BEGIN AS SMALL AS 800 SQ FT TO MANY ACRES / HECTARES PHOTO ALBUM The Worlds Highest Quality Greenhouse Rose operation – Spokane, Washington Quality Plus is our premier peak-style house. It is used under maximum environmental conditions and yet it can meet most urban and varied conditions and zoning. This installation is a 42′ wide Glass structure. Available in a number of lengths, widths, and coverings. Widths from 15′ (4.57m) to 52′ (15.8m). High sidewalls for even the tallest plants. Quality Plus as a swimming pool cover. Structural elegance that looks good anywhere – Madras, India Strong for the British Columbia snow loads.