When we moved in the previous people built a wooden shelf for the pantry area to put their canned goods etc,... Well it's VERY heavy and I couldn't pick it up or even drag it! So I kind of picked up one side and rolled it out of the carport area. After a few rolls it fell apart and 3 of these became apparent. Perfect boxes 27"L x 13"s wide. Would this be a tight squeeze if I divided them into two nest boxes each?