Two Styrofoam boxes each 16”w x 16”d x 16”t
7 lengths of 2”x2”x8’ Pressure Treated Lumber cut into these dimensions:
A. 36”, 36”, 18 ¾”
B. 36”, 36”, 18 ¾”                                                                                                       
C. 14”,14”,14”,14”,14”,14”                                                                                         Build a shelter: Part 1
D. 17 ¾”, 17 ¾”, 17 ¾”, 17 ¾”, 16 ¾”
E. 36 ½”, 36 ½”, 16 ¾”
F. 32”, 32”, 13 ¼”, 13 ¼”.
G. 33 ¾”, 40”
Panel frame dimensions using the 2x2 cuts:                                 
Back Panel: 2@ 36”, 2@14”
Side Panels: 4@17 ¾”, 4@ 14”
Bottom Panel: 2@36”, 2@ 16 ¾”
Top Panel: 2@ 36 ½”, 2@ 18 ¾”, 1@ 33 ¾”
Front Panel: 2@ 32”, 2@ 13 ¼”
Support for Slanted Roof: 40 ½”
1 of the 4’x8’x1 ½” PINK Insulation Board
Back Panel: 33 ¼” x 14”                                                                                          Build a shelter: Part 2
Side Panel Left: 15” x 14”
Side Panel Right: 15” x 14”
Bottom Panel: 33 ¼” x 16 ¾”
Top Panel: 33 ¾” x 17 ¼”                                                                           
Front Panel: 29 ¼” x 13 ¼”
2 of the 4’ X 8’ Black 4mm Corrugated Sheets
Back Panel: 2@ 35 ½” x 16 ¼”
Side Panels: 4@ 17 ¼” x 16 ¼”
Bottom Panel: 2@ 35 ½” x 19”
Top Panel: 2@ 36” x 21”
Front Panel: 2@ 31 ½” x 15 ½”
OPTIONAL Slanted Roof Piece 1@ 40 ½” x 28”                                               
(an extra corrugated sheet will be needed for this)                                       Shelter completed:

Due to the size of the interior space, the thickness of

the insulated walls surrounding it and a cat's natural

body temperature of 100-102 degrees, these shelters

are able to maintain a temperature 40-50 degrees

warmer than the outside temp when cats are using it.