The average size fo a twin sofa would be 57 inches width 38 inches depth and 36 inches height.
Standard sofa dimensions in mm.
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These are scaled down sofa sleepers so the arm height is 25 inches the distance between arms is 43 inches the distance between the end of the sleeper sofa to outer back is 89 inches leg height is 3.
Standard dimensions of wall cabinets depth 25 deep countertop depth 30 deep countertop height with full soffit height with no soffit height of cabinet above countertop height of cabinet above stove top height of highest shelf width 12 1 4 60 68 to match base cabinet.
Standard dimensions of a twin sofa sleeper.
The actual depth of the seating area is.
Most furniture is manufactured to standard measurements.
Sofas vary in size from 6 to 8 feet long and 32 to 40 inches deep for a standard size sofa to 4 to 6 feet long and 28 to 30 inches deep for a loveseat.
To make it more useful we have put together a reference pdf with all of the sizes that you can download for free.
On top of that you can get all of the cad drawings that are featured in this post from our shop for a small fee.