3 Series Single

We offer simple, easy to follow instructions in printed and video format for the DIY types.

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“Detailed, easy to follow instructions. Product is great quality. Tried (unsuccessfully) to install a competitive product, and the difference in the product is quite noticeable. Customer service was personal, responsive, better than most. Will definitely buy from Check Corp again. “

- William G., Maine
“In this era of off-shore manufacturing and customer service, it was an absolute pleasure to deal with Check Corp! The level of personal customer service was outstanding, with immediate response to my various inquiries. What a remarkable experience. Thank you, and I’ll definitely be a repeat customer!”

- Bill G.
“My customers have been happy since I have been using Check Corporation.”

- Rich Boulay, Action Glass - East Windsor, CT