Design: I do not have a design file. The project design is very basic and consists of a flat rectangle with rounded corners and different thickness at each end lengthwise as described below. Project: Fabricate spacers that will compensate for the slope of a concrete patio so that the four corner posts of a gazebo can be installed on top of the spacers and the posts be perfectly vertical. Material: Black color, ABS or nylon might be suitable. The material must be non-compressible and outdoor weather-proof (extreme heat and cold, direct sun and rain). Dimensions of Spacer Design A: 4 & 5/8 (or 4.625) inches wide; 8 & 3/8 (or 8.375) inches long; 1/4 (or 0.25) inch radius corners; Thickness of 1 inch at one end (lengthwise); Thickness of 27/32 (or 0.84375) inch at the opposite end (lengthwise). Dimensions of Spacer Design B: 4 & 5/8 (or 4.625) inches wide; 8 & 3/8 (or 8.375) inches long; 1/4 (or 0.25) inch radius corners; Thickness of 1/4 (0.25) inch at one end (lengthwise); Thickness of 13/32 (or 0.40625) inch at the opposite end (lengthwise). Production Quantities: Spacer Design A = 2 (two) spacers Spacer Design B = 2 (two) spacers Other Details: Flexible timing, local Carson City pick up (no shipping) if available.