matboardhq.com Reviews 

I purchased two sets of mats for double matting my artwork, and unfortunately both orders have significant cutting issues. One side is noticeably larger than the other. One set of mats is approximately 1/8" smaller than the first for double matting.

I contacted customer service and offered to return the mats, but they refused to issue a refund. Given that these were custom mats cut incorrectly, this was very disappointing. The total for both orders was $121.01.
Between the inaccurate cuts and the refusal to resolve the issue, this was a very poor customer service experience. I would not recommend MatboardHQ for artwork that requires precision.

The mat board advertised as acid free is not acid free. The Crescent board advertised is actually BM222, the lowest grade mat board Crescent makes, but mat board.com does not reveal the number of the mat board so there's no way to find out exactly what you are ordering. I trusted that the mat board was acid free. There is a lack of transparency with this company and I will never order anything from them again. I paid way too much for the product I received.