Please call or email us with your lawn mower's make, model & deck width if you are unsure which of the 4 versions will fit your mower. All versions are commercial grade, the difference is the layout of the components to ensure they fit your mower's deck configuration. Will this fit my mower?  Read our blog with more info or print out the true-size template below to test fit it on your mower using paper. Read our blog about mower chute blocker fitment. Quickly convert your stock lawn mower grass flap with a motorized grass flap to quickly control the grass clippings within the mower deck.  The grass flap has four positions the mower operator can scroll through with the press of a single button: Fully open, 1/2 open, 1/4 open, and closed.  This gives you complete control of the grass clippings! Green Guard Grass Flap Review After 125 Hours *We also sell the Proslide XT lawn mower sulky and no-drill kits for all Green Guard model motorized grass flaps Russell mentioned in this video.  We also do the online marketing for Gwinnett Lawns - Website, SEO, Google Ads, Company Emails, etc.  Learn more about our marketing services for lawn and landscape companies on our agency's website.  We've built over 100 lawn and landscape websites, all getting great results! If your lawn mower is a pull start, you will need to add a battery. Learn more about using the Grass Flap/Chute Blocker Slim HD Model with a lawn mower without a battery. Will this grass flap fit my lawn mower?  Which model and flap material should I choose? Test fit using this PDF:   The Green Guard Slim HD Chute Blocker Actual Size Fitment Template PDF Please add a note at checkout with your lawn mower's make, model, and deck size so we can double-check fitment before shipping. If it doesn't fit, we will issue a full refund immediately. You are viewing the Slim HD model grass flap and chute blocker made by The Green Guard in the USA.  The Slim HD model is for lawn mower decks 36" or smaller, walk behinds, standers, and zero turns.  Check out the HD model if your lawn mower has a 42" or larger deck. We recommend the rubber flap, but it is just a personal preference. The reason we recommend the rubber flap is that it is more forgiving. Even the most careful lawn mower operators can get a little too close to a fence post now and then! The rubber will snap back into shape, while the aluminum flap prefers to bend. Motorized Grass Flap Benefits Keep your hands on the controls Keep your feet and hands away from your lawn mower's blades Save time mowing each lawn Get a more professional finished result with better control of where the grass clippings fly Reduce liability by utilizing the 1/4 open position when mowing near windows, vehicles, and other easily damaged items when mowing tall grass Shave Seconds Off Mowing Each Lawn and Mow Safer Professional lawn mowers know every second saved equates to more profit. Become more efficient by automating your lawn mower's grass flap. It is also much safer than sticking your hand or foot down by your lawn mower blades to open and shut it manually.